Quote:
Originally Posted by 401FlaGATOR
I suspect it may have to do with the profile, the front tires have a higher profile than the back tires, I think the difference is 10mm usually, with the front having 10mm/2 =5mm more of an air cushion.
Bicycle tires are usually inflated to higher PSI and they have even less profile.
This also may tie into how higher profile on the front can absorb shocks better if you hit a pothole or curb, with a lower profile there might be more risk. The way they do it makes the front tires have 10mm more diameter than the rear which from aesthetics point of view shouldn't be proper. A more agressive stance would be achieved by the opposite.
Inflating the front to a lower pressure than rears makes it better able to handle potholes, and with the higher profile the pressure can be lower without running into isues.
|
Realizing this post is very old, but as the thread has now been raised from the dead, M2/M3/M4 have 35 profile 19" tires front and rear (and 30 on 20s), M2 (245/265) calls for 32 all around while M3/M4 (255/275) call for 35 all around.
Clearly weight is the factor as the M3/M4 front 255 falls in between the M2 245/265.