Wilwood BP-10 vs BP-20 vs BP-30 Brake Pad Compounds

By Core Brake Parts Tech Team — Circleville, OH warehouse

Wilwood BP-10 is a medium-friction street performance pad with low dust and noise. BP-20 is the step up for cars that see autocross or track days, with more friction and a wider temperature range. BP-30 is a race-only compound that needs heat to work and should not go on a car that is mostly driven on the street.

All three are offered for Wilwood caliper pad shapes, so the choice comes down to how hot your brakes actually get. Below is how each compound behaves, what Wilwood rates it for, and how to pick the right one.

How Wilwood Rates Pad Compounds

Wilwood describes each compound with four qualitative ratings in its brake pad catalog: heat range, cold torque (how hard the pad bites before it warms up), hot torque (bite at operating temperature) and wear rate. It also publishes a friction graph for each compound. According to Wilwood's compound pages, that graph data is gathered with repeated stops from 95 mph to 40 mph at 0.5g deceleration, continuing until the pads reach 1300 degrees F. Wilwood notes that the actual friction you get varies with temperature and the number of braking cycles.

The key idea: a pad compound has a temperature window. Inside it, friction is strong and consistent. Below it, a pad built for heat feels weak and can be noisy and dusty. Push any pad far enough past its window and it fades. Street pads are built to work cold; race pads are built to survive heat.

BP-10: The Street Performance Baseline

When Wilwood introduced BP-10, it called it a new metallic-composite compound that combines the medium-to-high temperature friction of a semi-metallic race compound with the quiet engagement, cold response and lower dust usually associated with ceramic street pads.

Wilwood's current description is a medium-friction pad with gradual response, a low wear rate on iron rotors, low to medium wear at low temperatures, and low dust and noise. Wilwood calls it a high performance street compound with improved friction, lower wear and lower dust than standard replacement pads, and lists it as the baseline compound for most of its disc conversion and upgrade kits. Its catalog also says BP-10 beds quickly and responds fast without high rotor abrasion.

Best fit: muscle cars and daily-driven performance cars, disc brake conversions, street-driven drag cars, and light-to-medium braking on dirt. If your car never sees a road course, BP-10 is usually the right answer.

BP-20: Street Car That Goes to the Track

Wilwood describes BP-20 as having increased friction and a wider temperature range than BP-10, and calls it the baseline pad for track-oriented street cars. Within Wilwood's medium-temperature pad group, BP-20 has the highest effective temperature range. Engagement is smooth, and friction rises as temperature increases, with a medium wear rate at high temperature.

Wilwood's launch flyer explains the feel: BP-20 has a progressive response as pedal pressure and temperature rise, giving confident repeated stops and good modulation. The metallic-composite formula is meant to give an aggressive feel without the harsh noise, high rotor abrasion and heavy dust of high-metallic compounds.

Wilwood lists BP-20 as okay for street use and suited to autocross, track days, drag racing, and medium braking on dirt and pavement race cars. Its compound page also lists stainless steel rotors as compatible, which the BP-10 page does not.

Best fit: a car that is driven on the street most of the week but runs track days, autocross, or a heavier drag car that needs repeated hard stops without fade.

BP-30: A Race Compound

BP-30 is a different category. Wilwood's compound page labels it racing only, not for street use. It is a high-friction pad with a medium initial response that increases with rotor temperature, very high heat fade resistance, a low wear rate during sustained high-heat braking, and a predictable, linear response with good modulation.

Wilwood lists it for road course, pavement oval, drag racing, off-road racing, dirt late models, and stock car and modified open-wheel racing, and notes it suits track cars with ABS. Its catalog adds that BP-30 beds quickly with low rotor abrasion and long wear.

Wilwood's pad product guide carries a clear warning for race compounds: do not use pads intended for high temperatures in low-to-medium temperature street driving. Besides poor driving qualities such as low friction, extra noise and dust, it causes damage and premature wear to both the rotors and the pads. A BP-30 pad on a cold commute is running below its window on nearly every stop.

Best fit: dedicated race cars and trailered track cars where the brakes stay hot.

How to Choose Between Them

1. Be honest about temperature. Street driving, even spirited street driving, rarely keeps brakes hot for long. Pick BP-10 for street, BP-20 when track or autocross time is a regular thing, and BP-30 only for competition.
2. Consider how friction builds. All three carry a Medium cold-torque rating in Wilwood's catalog. The difference shows up as heat builds: BP-20 and BP-30 are rated for higher hot torque than BP-10.
3. Match your rotors. Check the rotor material on the compound page. BP-10 is listed for steel and iron, BP-20 adds stainless steel, and BP-30 is listed for iron or steel.
4. Match the pad shape to the caliper. Wilwood pads are sold by pad plate shape, which is tied to the caliper. For example, Wilwood's flyer lists pad type 7112 for the Dynalite caliper with cotter pin. Confirm the pad type for your caliper before ordering.
5. Run one compound per axle. Use the same compound on both sides of an axle so the car stops straight and brake balance stays predictable.

If your car runs OE-style calipers rather than Wilwood calipers, browse our brake pads by vehicle or the quieter ceramic brake pads for daily drivers. Worn or grooved rotors should be replaced at the same time; see our replacement brake rotors.

Bedding New Wilwood Pads

Wilwood says all pads, even OE replacement parts, benefit from bedding, which it describes as the final heat cure that conditions the pad for service. Its published bedding steps apply to all compounds and should only be done on a track or other safe location where you can legally reach 65 mph and slow down quickly:

1. Make a series of light stops to build heat: brake for 3 to 5 seconds, then release for about twice as long.
2. Move to several medium to firm stops to keep raising temperature.
3. Finish with 8 to 10 hard stops from 55-65 mph down to 25 mph, with a cooling interval between each.
4. If you notice any fade, start the cool-down immediately.
5. Cruise at moderate speed using the brakes as little as possible, avoid sitting stopped with the pedal held down, then park and let everything cool to ambient temperature.

After bedding, the rotor faces should show a uniform burnished finish. Wilwood notes that smearing or blotches can mean the brakes were heated too quickly; if it does not blend away on the next cycle, or if you get chatter, the rotors need sanding or resurfacing.

Environmental Compliance

Wilwood's BP-10 and BP-20 pages state that the formulations are NSF International LeafMark certified and compliant with SAE J2975. Washington State's Better Brakes law uses the LeafMark system: Level A (one leaf) limits asbestos, cadmium, chromium, lead and mercury; Level B (two leaves) adds copper below 5 percent by weight; Level N (three leaves) meets the 2025 requirement of less than 0.5 percent copper. Check the leaf level on the box if that matters where you live.

Frequently Asked Questions

Can I run Wilwood BP-20 pads on the street?

Yes. Wilwood lists BP-20 as okay for street use and calls it the baseline pad for track-oriented street cars. It has more friction and a wider temperature range than BP-10.

Is BP-30 a good upgrade for a street car?

No. Wilwood labels BP-30 racing only. Race compounds used at street temperatures give low friction, more noise and dust, and can wear the rotors and pads prematurely.

Which Wilwood pad has the least dust?

Of these three, BP-10 is the one Wilwood describes as low dust and noise. Wilwood's ceramic-based Q compound is listed in its catalog as having the lowest dust and noise.

Do BP-10 and BP-20 fit the same calipers?

Wilwood offers both compounds in many of its common pad shapes, such as Dynalite and Superlite pad types. Order by the pad type for your caliper, then choose the compound.

Do I need to bed in new Wilwood pads?

Yes. Wilwood recommends bedding for all new pads and rotors, using light stops, then medium to firm stops, then 8 to 10 hard stops, followed by a slow cool-down.

Can I use BP-20 with stainless steel rotors?

Wilwood's BP-20 page lists steel, stainless steel and iron rotors as compatible. Check the compound page for your rotor material before ordering.

Sources

1. Wilwood - BP-10 compound page - BP-10 friction, wear, dust, applications, rotor compatibility, LeafMark and SAE J2975, friction test method
2. Wilwood - BP-20 compound page - BP-20 temperature range, applications, stainless rotor compatibility
3. Wilwood - BP-30 compound page - BP-30 racing-only use, fade resistance, applications, ABS track cars
4. Wilwood - BP-10 and BP-20 Smart Pad flyer - metallic-composite formula, BP-20 progressive response, pad type 7112 Dynalite fitment
5. Wilwood - Brake pad catalog pages - heat range, cold and hot torque and wear ratings, Q compound, bedding as final heat cure
6. Wilwood - Brake pad product guide - warning against race pads in street driving
7. Wilwood - Brake Pad and Rotor Bedding Steps - bedding procedure and post-bedding inspection
8. Washington State Department of Ecology - Better Brakes law - LeafMark levels and copper limits