What size tires
 

I was wanting to get 20s at some point for the stang, but I was curious about tire size. What's the biggest tire I can go with front and back without throwing of the speedo? Or would you guys just suggest a tuner?

These cars can handle up to a certain % increase or decrease in tire OD to correct the speedo, at least seeing what is said on SVTP that is. You don't really need a tune, but just a programmer that can adjust the values in the ECU via the handheld.

I personally try to stick as close to the OE tire OD as I can.

But we need to know tire widths and types of tire you are wanting to run.

I was thinking Falken 452 with 255 up front and 275 or 285 out back. Te bigger the better out back just don't know how big I can go. I do plan on dropping it with some sport lines as well.

What size tires
 

Do at least a 295 rear on a 10" rim. Or go bigger.

In the front, I would do a 9-9.5 if you can get the correct offset. Some rims are only 8.5 front. I would then run a 255-275 tires depending on rim width.

Unless you want to run a square setup

My tire height is 27.3in I have stock 18s with 235/50/18 all season perellis I wouldn't go wider than what you need. Depends on what your planning on doing. Like me I plan on just street drags. 40-160 rolls and I won't be going over 450 er so HP so I don't need a huge tire. I barely spin the 235s in 2ed gear at a 40 punch and I'm at 410rwhp now

What size tires
 

How? I spun my stock 255s with ease in second doing a 30 roll in 2nd.

You can never really have too much tire. I spun the 245's badly with just the lt's and tune, and they are an absolute joke on there right now. The Razors are 10" and 9" and have 275/35's and 255/35's on them but I prefer the 295's on the back and will be switching them out when the 275's wear out.

I Get just a tiny spin when I punch it. Idk how but these tire have 18k miles on em and are still working for me fine . When I get new rims I will only be going to 275s in a summer performance tire most likely.

What size tires
 

I ditched my p-zeros at 20k with around 5/32 left. And I spun them maybe 10-15 times, but only for a few seconds. No burnouts, no drag racing, nothing. Not even hard launches

Mine are about to make a trip to NY and back then its time for new wheels n tires soon as I can afford it. I'll proly use these for 23-25k miles

Same for me.:favorites13:

Tires a typically what people skimp out on which is unfortunate. Tires and dampers are the two most important components to a suspension. There is no such thing as too much tire on these cars.

Could you fit 315s on a 20 inch wheel with the car lowered 1 inch front 1.5 back?

What size tires
 

Yeah. I'm pretty sure that Steve is running a 315 on his wheels.

Steve is running a 305.
I had to remove my sportlines in the rear and put in prokits just to run a 315.