[Macabre]

I'll preface with this: I've never bought custom wheels/tires since this is the first "fun" car I've ever owned. Forgive my ignorance.

So my stock Pirellis are finished and I've been telling myself I'd get new wheels when I killed the stock tires. What I would LIKE to get is 19x10'' Forgestar CF10s on all four corners with 285 width Michelin Pilot Sport A/S3s wrapped on them. From my calculations 285/40/19 would be the closest thing to the same height as my stock 245/45/19 tires. Slightly taller.

With that in mind, my suspension is completely stock. Can these fit without rubbing? I don't currently plan on lowering the car. I know I've read Roush is slightly lowered (1/2''? 1"?) and puts 10 inch wheels on all four corners with 275 width rubber, but I don't know the tire height or if it only works because they use a specific offset with the wheels. If it all comes down to offset, does anyone know what the proper numbers would be in this case? Or is that more of a question for those I buy the wheels from? Which is looking like modbargains at the moment since they have the finish I'm looking for - semigloss black. I'd like the wheels to appear flush or just barely tucked in the wells, but I don't know if that makes them more likely or less likely to scrape on the front.

Any input is appreciated (even if it's just "ask modbargains/forgestar/whoever"). I just want to make sure I get my information correct before dropping $400 per wheel/$300 per tire.

 

[Blackpenguin69]

no, you need to get 285/35-19 Its what the boss uses on the rear. Its the same diameter as what the track pack/ boss use. 285/40 is to tall for what your wanting.

 

[Blackpenguin69]

dfadsfadfadsf

 

[unimorpheus]

If you do the math it appears his 285/40-19 is closer to stock at +0.15 over stock sidewall vs 285/35-19 and -0.41 under stock sidewall. Speedo 0.7 mph slow vs 2 mph fast. A matter of preference I guess.

 

[Macabre]

I mean, I'll go with whatever fits. I was just mathing it up and figured the closer, the better. But if 285/35 fits the front and 285/40 doesn't, then I'll go with 285/35.

 

[Blackpenguin69]

If you do the math it appears his 285/40-19 is closer to stock at +0.15 over stock sidewall vs 285/35-19 and -0.41 under stock sidewall. Speedo 0.7 mph slow vs 2 mph fast. A matter of preference I guess.

i think i would rather have the size that fits and what ford uses on their other mustangs (boss/track pack/ brembo package). You can always just a tuner, you dont need a new tune just the tuner. or even go to ford and they should be able to recalibrate your speedo for the tire size change. the speedo looks like its will be off either way, so just do the oem 285/35 size.

 

[Macabre]

Honestly, I'm more worried about making sure there's no rubbing at that width and finding out what offsets are needed. I have no problem running 285/35 as long as it works.

 

[Blackpenguin69]

Honestly, I'm more worried about making sure there's no rubbing at that width and finding out what offsets are needed. I have no problem running 285/35 as long as it works.

the width is no problem, you can fit 315's. i bolted my amr 19x10's with 295/35 on the front just to see if it would work. it was close to hitting the strut but i dont think it would have ever hit it unless i was doing full speed turns. as far as turning idk if it would rub or anything. it looked sick though. ive also bolted the boss 19x9.5 with 285/35 on the front to see if it would work. it was close too (not as close as my amr's) but the offset of those oem wheels dont make it flush with the fender. if it did then it would have been better. car was on sportlines.