Brake Mystery - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Suspension | Wheels&Tires | Brakes Sponsored by: Discount Tire Direct

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 04-19-04, 02:07 PM Thread Starter
Registered User
Join Date: Jan 2004
Posts: 3
Brake Mystery

I've noticed an excessive amount of brake dust on the front rims of my F150. Compared with the rear wheels, there's much more on the front. All four are disk brakes. Since looking, I've noticed this on almost all vehicles. Front wheel drive, rear wheel drive, four wheel drive, seems not to matter. Almost all vehicles I see on the road seem to have more brake dust on the front rims than on the rear.

This seems to imply that the front brakes are wearing more, and that more braking action is occuring on the front wheels than the rear. Is this true? If not, why the excessive brake dust on the front rims?

If it is true, why? Are the braking systems engineered to apply more braking action to the front wheels? What's the benefit in that?

troyshouse is offline  
Sponsored Links
post #2 of 2 (permalink) Old 04-19-04, 04:03 PM
Registered User
'92BigBronco's Avatar
Join Date: Aug 2003
Posts: 340
Re: Brake Mystery

Yes, the front brakes wear faster than the rear brakes. When you step on the brakes, much of the vehicles weight is transferred to the front wheels forcing the front brakes to work harder than the rear brakes. It has nothing to do with how brakes are engineered, it's just physics/dynamics. Because of the fact that the front brakes work harder, the front brakes are often larger than the rears to help the brakes cope with the increase in forces, (i.e. larger rotors, calipers, brake pads, etc.).

The fact that the front brakes do more of the stopping due to weight transfer was the thinking behind rear-antilock brake systems. With much of the weight of the vehicle shifted towards the front under hard braking, the rear end obviously gets lighter. The harder the braking, the lighter the rear end gets. Under extreme braking conditions like those found in an emergency situation, the rear wheels could lock up because there's just not enough weight on them to create the force necessary to overcome the braking forces applied to them. We all know that we stop faster if the wheels don't lock up. It's all about static vs. kinetic friction.

1992 Ford Bronco
E4OD- B&M Stage 2 shift kit
Full 3" stainless Bassani Exhaust
32" BFG's/stock suspension

"No replacement for displacement."

"Our lugnuts require more torque than most Honda's produce!"
'92BigBronco is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Suspension | Wheels&Tires | Brakes
Gear in this thread - Powered by O'Reilly Auto Parts

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Similar Threads
Thread Thread Starter Forum Replies Last Post
brake fluid leaking EAtom Suspension | Wheels&Tires | Brakes 7 04-21-04 04:55 PM
Brake fluid leaking EAtom Suspension | Wheels&Tires | Brakes 10 04-20-04 09:22 AM
hand brake on xw/xy ute 460cixy Suspension | Wheels&Tires | Brakes 9 04-16-04 07:56 PM
brake fail light eafairmontghia Suspension | Wheels&Tires | Brakes 3 07-01-03 01:01 AM
DIY brake painting guide - long and lots of pics !Gn|T|0n Suspension | Wheels&Tires | Brakes 13 06-22-03 07:06 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome