Here's a silly question from me if there was one... just general observation whenever I have washed my car...

Why are the rear alloys always dirtier than the front ones...

Never understood this... they are only 16" standard Jap 95' wheels...

 

Same problem on mine, I always put it down to brake dust

 

Thats it

Larger disks on the front

 

Did you mean to say REAR more dirty than FRONT?

My front wheels are always black with brake dust as the front takes most of the load, for want of a better word, under braking and so the front brakes produce lots of dust, and what looks like smoke as well on occasions.

However, if I were to be driving on very dirty roads then the rear wheels would get lots of muck thrown up around them, I guess because they catch some of what is thrown up by the front wheels while the front wheels have nothing ahead of them. I've never had them look more dirty than the fronts though. I suppose if you washed the car and then drove fairly easily along a very dirty road then on your return the rear wheels might be more dirty than those in front because you would have produced little or no brake dust.

 

Not only larger discs, but also the car's weight shifts forwards under braking, so much more of the braking effort is done by the fronts. That's why the front pads wear out much faster than the rears despite being much bigger to begin with, and a load of that pad material ends up on your wheels.

The easiest way to shift it in my experience is to wax the wheels properly when they're clean - then the brake dust never gets stuck in the first place and you can just wipe it off with a damp cloth.

 

Aroud 80% of braking effort goes to front wheels.

 

During winter you always see the rears dirtier than the front, its all to do with the aerodynamics and the dirt going past the car. Similar to the rear window on a hatchback getting filthy even though it is facing the opposite way.

Drive slower and the rears will be cleaner

 

My fronts are always dirtier than the rears, even in the winter

 

HANG ON!

He said the back ones are worse than the front ???

Someone people dont even read the posts

My front one are worse though

edit: still some christmas eve cheer in my blood stream I see

 

Perhaps he does a lot of reversing, because my fronts are always dirtier than the rears

 

Rears are ok , always fronts. Dont understand

 

Yea often get really dirty rear wheels in this weather due to the salt etc brought up off the road by the front wheels which then sprays the rears. Perfectly normal in winter.
I would be worried if it was like that in the spring/summer months though.

 

Funny you should bring this up. I too noticed that in recent days/weeks my rear wheels are dirtier than the fronts, mostly a built up of salt deposits and black road dirt.

Normally the fronts are dirtier than the back due to brake dust.

 

My fronts are always dirtier.

Road cars have there braking bias set about 60 to the front and 40 to the rear ish.

In the dry optimum braking is about 70-80% front, but in the wet this would have you locking up very easily.

Race cars have adjustable brake bias, road carrs don't, but your front's still do the most work.

Cheers

 

he may have drums on the front