Mustang Bullitt Forum banner
1 - 3 of 3 Posts

·
Registered
Joined
·
3,270 Posts
Discussion Starter · #1 ·
i have heard Nitto DR's are the way to go...

i want to go wider in the back, stock is 8, then im thinking 9. i have the stock rims, 17", and was wondering if goin wider improves anything, or if it is more dangerous. i also want tires that i can use on the road, as well as wet roads.. because the stock tires do not stick for crap! which size do u recommend for what i want? should the front tires be changed too? also, what do the sizes mean? (the xxx/xx/xx in tire selection) i know the last # is rim size, correct?

thanx!
 

·
Registered
Joined
·
2,681 Posts
I never relized this but the tire rating in the front needs to be the same as the tire rating in the back( well its good to have them the same. ( rating not size)
 

·
Registered
Joined
·
155 Posts
Generally speaking the wider the tire's tread width the better the traction - for a given tire type.

The numbers on tires are the following:

Tire Number WWW/HHSRDD example 245/45ZR17

WWW is the tread width in mm
in the example 245mm wide or 9.6"
HH is the sidewall height as a % of width
in the example 245*0.45 = 110mm or 4.3"
S is the speed rating
in the example Z rating or the fastest
R means radial type construction
DD is the rim diameter in inches
in the example 17"

Note that tread width is wider than the rim width. You can usually go 2" wider on the tread than the rim without any trouble, but wider than 2" and you risk sidewall squirm. So we could go as wide as 255 with stock rims. I would keep the 45 sidewall height. this will put the speedometer off calibration slightly, it may read 1-2% lower than actual. These numbers are not exact and some tire manufacturers cheat especially on the tread width spec.

Tires are also rated for treadware, traction and temperature. Look on the sidewall for these. The higher the treadware number the longer the tire should last. Traction and temperature are given as A B or C, A being best. The stock Goodyear's ratings are 220 A, A. The stock tires are really pretty good street tires. If you want more traction, get wider rims and go with as wide a tread width as you can put on the car/rims. You can get sticker rubber tread, but the tread life will be short. All this stuff and a lot more can be found on tire manufacturers web sites. I'll look it up if you want.
 
1 - 3 of 3 Posts
Top