Polishing and Paint Correction
What Speed Should You Polish a Car At?
Lower for spreading and finishing, higher for cutting - and a dial setting of 5 means a different speed on every machine, because half of them will not tell you what it means.
By Sawyer V. · Last verified 2026-09-10
We have not tested any of this. Everything below is compiled from published manufacturer specifications, and the arithmetic is printed so you can check it. This page carries affiliate links: if you buy through one we earn a commission at no extra cost to you, and it does not change the order of the picks. Full disclosure.
| # | Pick | Best for | Score | Price |
|---|---|---|---|---|
| 1 | Griot's Garage G15 Long-Throw Orbital Polisher Griot's Garage | The most published numbers of any polisher here | 5.9/10 | Check price on Amazon |
| 2 | RUPES BigFoot LHR15 Mark III RUPES | The most completely specified machine in the ledger | 5.5/10 | Check price on Amazon |
| 3 | Adam's SK Pro 15mm Swirl Killer Adam's Polishes | The most power on a 15mm throw, on a detachable cord | 6.1/10 | Check price on Amazon |
| 4 | Griot's Garage G21 Long-Throw Orbital Polisher Griot's Garage | Big flat panels, and nothing else | 7.4/10 | Check price on Amazon |
| 5 | Griot's Garage G9 Random Orbital Polisher Griot's Garage | The upgrade most people should actually make | 4.5/10 | Check price on Amazon |
No live price is currently verified, so every button here reads Check price rather than a number we cannot stand behind. Why we do it that way.
The machines that publish a speed
| Machine | Throw | Published speed | Control |
|---|---|---|---|
| Griot's G15 | 15mm | 3,000-5,300 OPM | Six settings |
| RUPES LHR15 Mark III | 15mm | 3,000-5,200 RPM | Not published |
| Adam's SK Pro 15mm | 15mm | Up to 5,000 OPM | Progressive trigger |
| Griot's G21 | 21mm | 3,000-4,500 OPM | Not published |
| Griot's G9 | 9mm | Not published | Not published |
| Chemical Guys TORQX | 9mm | Not published | Not published |
The three speeds of a polishing pass
A pass has three jobs. Spreading the product across the section wants a low speed, so it does not fling. Working it - the part that actually cuts - wants the top of the range. Finishing, where the haze is refined out, wants a step or two back down.
No maker on this site publishes which setting to use for which step. The ranges they do publish are the bounds, and the steps are relative: bottom of the range to spread, top to cut, back down to finish. Anybody giving you “speed 4 for polishing” is giving you a number that only means something on their machine.
Why a dial number is not a speed
Griot’s spread the G15’s 3,000 to 5,300 OPM over six settings, so each step is worth roughly 460 OPM on that machine. On a machine that publishes no range, a dial number is a position, not a speed, and there is no way to know whether setting 4 on one machine is faster or slower than setting 4 on another.
A longer throw, a lower top speed
Griot’s publish a lower top speed for the 21mm G21 - 4,500 OPM - than for the 15mm G15 at 5,300. The larger orbit moves the pad further on every cycle, so fewer cycles cover the same ground. The Griot’s ladder sets the three machines side by side.
If you want to know your speed
- Numbered settings with a published range: Griot's G15, six settings over 3,000-5,300 OPM.
- A published range on a professional machine: RUPES LHR15, 3,000-5,200 RPM.
- Speed under your finger rather than on a dial: Adam's SK Pro, progressive trigger up to 5,000 OPM.
Every pick, with the working
Each entry lists the specifications the maker publishes, the axis scores those specifications produce, and what you give up. Rows that read “Not published” are not omissions on our side: they are figures the maker will not commit to in writing, and they cost the product points on the transparency axis.
Our pickThe most published numbers of any polisher here
Griot's Garage G15 Long-Throw Orbital Polisher
Griot's Garage
$249.99 for a 15mm throw, an 1,100-watt motor, six settings from 3,000 to 5,300 OPM, a 5 inch fanned backing plate and a 10 foot quick-connect cord. That is five published figures on one page and it is the most complete specification in this ledger.
- Orbit throw
- 15mm
- Motor
- 1,100 watt
- Speed range
- 3,000 - 5,300 OPM, six settings
- Backing plate
- 5 inch fanned BOSS plate
- Cord
- 10 ft quick-connect
- Weight
- Not published
- Warranty
- Not published
What it does well
- Speed range published as 3,000 to 5,300 OPM across six settings, which nobody else here does
- 1,100 watts against the G9's 1,000, with a 15mm throw to use it on
- 10 foot quick-connect cord published
- Fanned BOSS backing plate included rather than sold separately
Who it is not for
- 15mm is more machine than a beginner needs and it is less forgiving on edges
- No weight published
- No warranty term published
How this score was calculated
- Protection claimdropped
- Nothing in this category is bought on how long it lasts, so the axis is dropped and the other weights are re-normalized.
- Published orbit throw6.3/10, weight 22%
- 15 mm, scored on a band running from 5 to 21. Published by Griot's Garage.
- Cost per ouncedropped
- This is not a consumable, so cost per ounce says nothing useful and the axis is dropped.
- Price against the ceiling3.8/10, weight 14%
- A listed $249.99 against the $400 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- Griot's Garage publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency7.1/10, weight 18%
- 5 of the 7 specifications we went looking for are published by Griot's Garage. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $249.99 per Griot's Garage's own store, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from Griot's Garage G15 product page, compiled September 8, 2026.
2The most completely specified machine in the ledger
RUPES BigFoot LHR15 Mark III
RUPES
RUPES publishes orbit, power, speed range, pad diameter, weight, cord length and thread pitch on one page: 15mm, 500W, 3,000-5,200 RPM, 125mm pad, 2.6kg, 9 meters of cord, M8-F. Seven numbers. Nobody else here publishes more than five.
- Orbit throw
- 15mm
- Motor
- 500 W
- Speed range
- 3,000 - 5,200 RPM
- Backing pad
- 125mm (5 inch)
- Weight
- 2.6 kg (5.73 lb)
- Cord
- 9 m (30 ft)
- Pad thread
- M8-F
- Warranty
- Not published
What it does well
- Seven published specifications, including weight in kilograms and cord length in meters
- 9 meter cord, which is roughly three times what a domestic tool ships with
- 2.6kg, published, and weight is what decides whether hour three feels like hour one
- M8-F thread published, so backing plate compatibility is knowable in advance
Who it is not for
- 500W is half what the Griot's long-throw machines carry, which shows on hard clear coats
- No warranty term published in the technical documentation
- The kit price at a US retailer is $526.00, well above the Griot's machines
How this score was calculated
- Protection claimdropped
- Nothing in this category is bought on how long it lasts, so the axis is dropped and the other weights are re-normalized.
- Published orbit throw6.3/10, weight 22%
- 15 mm, scored on a band running from 5 to 21. Published by RUPES.
- Cost per ouncedropped
- This is not a consumable, so cost per ounce says nothing useful and the axis is dropped.
- Price against the ceiling0.0/10, weight 14%
- A listed $526.00 against the $400 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- RUPES publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency8.8/10, weight 18%
- 7 of the 8 specifications we went looking for are published by RUPES. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $526.00 per Adam's Polishes, LHR15 Mark V kit listing, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from RUPES' LHR15 Mark III technical page, compiled September 8, 2026.
3The most power on a 15mm throw, on a detachable cord
Adam's SK Pro 15mm Swirl Killer
Adam's Polishes
$299.99 for 15mm at 1,000W and 9 amps, with a progressive trigger to 5,000 OPM, a 5 inch plate convertible to 6, 5.5 lb without the cord and a 25 foot detachable cord. The progressive trigger is the feature: speed by finger pressure rather than by dial.
- Orbit throw
- 15mm
- Motor
- 1,000 W, 110 V, 9 A
- Speed control
- Progressive trigger, up to 5,000 OPM
- Backing plate
- 5 inch, convertible to 6 inch
- Weight
- 5.5 lb without cord
- Cord
- 25 ft detachable
- Warranty
- Not published
What it does well
- Progressive trigger up to 5,000 OPM, so speed is controlled by hand rather than by stopping to turn a dial
- 1,000W and 9 amps published, the most power on a 15mm throw here
- 25 foot detachable cord published, and detachable matters for storage
- 5.5 lb without cord published
Who it is not for
- $299.99 is $50 more than the G15 for a similar throw and similar power
- No warranty term published
- A progressive trigger takes practice; a dial is more repeatable between sessions
How this score was calculated
- Protection claimdropped
- Nothing in this category is bought on how long it lasts, so the axis is dropped and the other weights are re-normalized.
- Published orbit throw6.3/10, weight 22%
- 15 mm, scored on a band running from 5 to 21. Published by Adam's Polishes.
- Cost per ouncedropped
- This is not a consumable, so cost per ounce says nothing useful and the axis is dropped.
- Price against the ceiling2.5/10, weight 14%
- A listed $299.99 against the $400 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- Adam's Polishes publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency8.6/10, weight 18%
- 6 of the 7 specifications we went looking for are published by Adam's Polishes. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $299.99 per Adam's Polishes' own store, polisher only, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from Adam's SK Pro 15mm product page, compiled September 8, 2026.
4Big flat panels, and nothing else
Griot's Garage G21 Long-Throw Orbital Polisher
Griot's Garage
Skip this one. Unless your car is mostly flat, the G21 is the wrong end of a trade-off. The extra 6mm of throw buys speed on a hood and costs control everywhere else.
$259.99 for a 21mm throw, 1,100 watts, 3,000 to 4,500 OPM and a 6 inch plate. The 21mm covers ground faster than anything here on a hood or a roof, and it is the wrong machine for a car made of curves.
- Orbit throw
- 21mm
- Motor
- 1,100 watt
- Speed range
- 3,000 - 4,500 OPM
- Backing plate
- 6 inch
- Cord
- 10 ft
- Weight
- Not published
- Warranty
- Not published
What it does well
- 21mm throw, the longest here, which is real speed on large flat panels
- Speed range published as 3,000 to 4,500 OPM
- Only $10 more than the G15
Who it is not for
- A 21mm throw is genuinely awkward on tight or curved panels
- Lower top speed than the G15 (4,500 vs 5,300 OPM), because the throw is longer
- No weight published, and a long-throw machine's weight is what your arms feel
How this score was calculated
- Protection claimdropped
- Nothing in this category is bought on how long it lasts, so the axis is dropped and the other weights are re-normalized.
- Published orbit throw10.0/10, weight 22%
- 21 mm, scored on a band running from 5 to 21. Published by Griot's Garage.
- Cost per ouncedropped
- This is not a consumable, so cost per ounce says nothing useful and the axis is dropped.
- Price against the ceiling3.5/10, weight 14%
- A listed $259.99 against the $400 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- Griot's Garage publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency7.1/10, weight 18%
- 5 of the 7 specifications we went looking for are published by Griot's Garage. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $259.99 per Griot's Garage's own store, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from Griot's Garage G21 product page, compiled September 8, 2026.
5The upgrade most people should actually make
Griot's Garage G9 Random Orbital Polisher
Griot's Garage
$179.99 for a 9mm orbit driven by a 1,000-watt motor, shipped with a 6 inch vented backing plate and convertible to 5 inch. A 9mm throw finishes cleanly and asks less of your technique than a long throw; the 1,000 watts is what stops it stalling when you lean on a curve.
- Orbit throw
- 9mm
- Motor
- 1,000 watt
- Backing plate
- 6 inch vented, converts to 5 inch
- Cord
- Detachable
- Counterbalance
- Patent pending fan-cooled
- Speed range
- Not published
- Weight
- Not published
- Warranty
- Not published
What it does well
- 1,000-watt motor published, which is more power than most 9mm machines carry
- Ships with a 6 inch plate and converts to 5 inch, so pad choice is not locked in
- Detachable cord, published, which is the difference between storing it and wrestling it
- Fan-cooled counterbalance, which Griot's states extends tool and pad life
Who it is not for
- No speed range published on the product page, which is the second number you want
- No weight published
- No warranty term published on the page despite Griot's reputation for standing behind tools
How this score was calculated
- Protection claimdropped
- Nothing in this category is bought on how long it lasts, so the axis is dropped and the other weights are re-normalized.
- Published orbit throw2.5/10, weight 22%
- 9 mm, scored on a band running from 5 to 21. Published by Griot's Garage.
- Cost per ouncedropped
- This is not a consumable, so cost per ounce says nothing useful and the axis is dropped.
- Price against the ceiling5.5/10, weight 14%
- A listed $179.99 against the $400 one upgrade in this category realistically tops out at. A list price captured on the compile date, not a live price and not what you will pay.
- Written commitmentdropped
- Griot's Garage publishes no warranty term on this product's own page, so the axis is dropped. On a tool that is worth noticing, and it costs the product points on transparency instead.
- Spec transparency6.3/10, weight 18%
- 5 of the 8 specifications we went looking for are published by Griot's Garage. Every blank row below is something the maker will not put in writing, and it costs the product points here.
List price $179.99 per Griot's Garage's own store, captured on the compile date below. Not a live price and not what you will pay — the button is where the real number is.
Specifications from Griot's Garage G9 product page, compiled September 8, 2026.
No live price is currently verified, so every button here reads Check price rather than a number we cannot stand behind. Why we do it that way.
Questions people actually ask
+What speed should I use for compounding?
+What speed for a finishing polish?
+What speed to apply wax with a DA?
+Is OPM the same as RPM?
Where these figures came from
- Griot's Garage G15 product page — retrieved 2026-09-08
- RUPES LHR15 Mark III technical page — retrieved 2026-09-08
- Adam's SK Pro 15mm Swirl Killer product page — retrieved 2026-09-08
- Griot's Garage G21 product page — retrieved 2026-09-08
- Griot's Garage G9 product page — retrieved 2026-09-08
Every figure on this page is a published manufacturer or authorized-retailer claim, not a measurement we made. How we research explains exactly what we did and did not do.