4-BNGR

iTrader: (3)

Same brand of tire and same model tire... but is 225/45-17 (in the front) ok with 235/45/17 in the back, or vice versa.

Otherwise will a 225/45-17 tire give better handling (sidewall stifness) over the stock 235/47-17?

Thanks in advance,
4-BNGR

Neal@tirerack

iTrader: (25)

Well, the rears will be about 1/2" taller than the fronts which isn't really good for an AWD vehicle. Also, there isn't any performance advantage using that small of a staggered setup. I would stick with one or the other all around.

trinydex

iTrader: (12)

if you do stagger put the wider in front and the smaller in back. proven combo for time attack.

4-BNGR

iTrader: (3)

I'm confused? Both tires are a 45, just one is a 235/45-17 and the other a 245/45-17. Why would the tire be 1/2 taller if both are a 45 sidewall? Thanks...

Does it have something to do with the # of revolutions the tire makes per mile?

I've got these tires up front in a 235/45-17


but wanted to go with R comp 245/45-17

but I'm under the impression that this will not work b/c the R comps have less revolutions per mile and diff. max load and max pressure.

But is the first tire above (NT 555) in a 235/45-17 (for the rears) and the same (NT 555) but in a 245/45-17 (for the fronts) a combo that will work?

Thanks again.

4-BNGR

Neal@tirerack

iTrader: (25)

The "45", or profile in the tires size represents a percentage of the tires width. So as the tire gets wider the height will also get taller. The 45 in 235/45-17 is the height equal to 45% of 235 width. The 45 in 245/45-17 is the height equal to 45% of 245. This makes it wider and taller.
Is there a reason why you want to mix an R compound with a non-R compound tire?

4-BNGR

iTrader: (3)

I want the R compound in the front if possible for it's superior handling and traction capabilities. I've been know to drive my car "spiritedly" (110mph in sweeping twisties and my Z rated Nitto's (up front) have complained)
I'd like to have something that would stick to the road once heated up.

So the 245/45-17 (front) and 235/45-17 (rear) combo (same tires) is not ok because the "revolutions" made by the diff. sized tires will affect the "diffy and tranny," right?

Thanks Neal,

4-BNGR

I may just have to go with 245/45-17's (NT 555R) all around.

At $170 a piece, they're quite inticing. I wish you guys retailed them...

Neal@tirerack

iTrader: (25)

[QUOTE=4-BNGR]
So the 245/45-17 (front) and 235/45-17 (rear) combo (same tires) is not ok because the "revolutions" made by the diff. sized tires will affect the "diffy and tranny," right?

[QUOTE]

Right! Also the fact that mixing tires (especially an R compound) will give the car a nasty split personality. One end will want to grab more than the other and that can lead to poor handling. Its really best mechanically and for handling to have all four match