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GTRacerX
06-06-2013, 04:44 PM
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?

DirtyD
06-06-2013, 05:05 PM
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.

GTRacerX
06-06-2013, 06:06 PM
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.

DirtyD
06-06-2013, 06:49 PM
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.

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

Zeek
06-06-2013, 07:07 PM
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

DirtyD
06-06-2013, 07:10 PM
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

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

downtime!
06-06-2013, 07:12 PM
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.

Zeek
06-06-2013, 07:17 PM
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.

DirtyD
06-06-2013, 07:24 PM
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.

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

Zeek
06-06-2013, 07:28 PM
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

re-rx7
06-07-2013, 02:35 PM
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
Same for me.:favorites13:

jayman33
06-07-2013, 02:54 PM
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.

GTRacerX
06-07-2013, 04:57 PM
Could you fit 315s on a 20 inch wheel with the car lowered 1 inch front 1.5 back?

DirtyD
06-07-2013, 04:58 PM
Could you fit 315s on a 20 inch wheel with the car lowered 1 inch front 1.5 back?

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

Phuck Phace
06-07-2013, 05:06 PM
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.

saunupe1911
06-07-2013, 05:12 PM
My rim has a 42 offset so I'm going 295 and it should close to flush with the fender. My 275s have good to me but i can tell the backend needs more tire. I just dont want to introduce too much oversteer.

saunupe1911
06-07-2013, 05:15 PM
Could you fit 315s on a 20 inch wheel with the car lowered 1 inch front 1.5 back?

Absolutely.....but only with wheels with around +50 offsets such as forgestars. An offset in the 40s will only allow 305 depending on the wheel design

saunupe1911
06-07-2013, 05:21 PM
And dont make the mistake that I made with going with a 8.5 rim. Be sure to get 9 or 9.5 front rim so u can fit a 265 or 275 upfront to balance out the wide rear tire. An 8.5 will limit u to a 255/35/20 which has a small side wall and will be over inch shorter than a 295 to 315. Not good for the car's balance and stance

DirtyD
06-07-2013, 05:27 PM
Steve is running a 305.
I had to remove my sportlines in the rear and put in prokits just to run a 315.

I thought he had 315. Whoops. :o

gordelis
06-07-2013, 06:20 PM
I had 275 falken on 8.5" wheels and it looked fine, even better than on my current 10". It is definitely not wide enough for my 10". I might go 295 or 305 when these are gone...

GTRacerX
06-07-2013, 06:32 PM
It would be a 20x9 30 offset front with 20x10 40 offset rear.

saunupe1911
06-08-2013, 12:26 AM
I had 275 falken on 8.5" wheels and it looked fine, even better than on my current 10". It is definitely not wide enough for my 10". I might go 295 or 305 when these are gone...

And you didn't have any issues? There's not a single tire manufacturer that recommends over a 265 on a 8.5 wheel. Are those 275 fronts on a 8.5 wheel in your signature pic?

46Tbird
06-10-2013, 12:10 PM
265/35-20 Nitto NT555ZRs up front
305/35-20 Nitto NT555R drag radials out back
+30 offset 20x9 fronts
+45 offset 20x10 rears
Eibach Sportline springs

http://i13.photobucket.com/albums/a274/46Tbird/2012%20GT/mustangpic.jpg

DirtyD
06-10-2013, 12:16 PM
265/35-20 Nitto NT555ZRs up front
305/35-20 Nitto NT555R drag radials out back
+30 offset 20x9 fronts
+45 offset 20x10 rears
Eibach Sportline springs

http://i13.photobucket.com/albums/a274/46Tbird/2012%20GT/mustangpic.jpg
I still drool over your car. LOL

46Tbird
06-10-2013, 12:36 PM
Thanks man! I still dig it too.

JDMLOL
06-10-2013, 12:49 PM
I really liked the set up that I think was on Beau's car, I think he had 315s in the back. Does anyone know the wheels he has? I think they were steedas but I dont think they have them on their website. After seeing them, it made me reconsider mine.

DirtyD
06-10-2013, 12:59 PM
I really liked the set up that I think was on Beau's car, I think he had 315s in the back. Does anyone know the wheels he has? I think they were steedas but I dont think they have them on their website. After seeing them, it made me reconsider mine.

They are black Steeda Spyders

GTRacerX
06-10-2013, 01:22 PM
265/35-20 Nitto NT555ZRs up front
305/35-20 Nitto NT555R drag radials out back
+30 offset 20x9 fronts
+45 offset 20x10 rears
Eibach Sportline springs

http://i13.photobucket.com/albums/a274/46Tbird/2012%20GT/mustangpic.jpg

Very nice setup! Is your speedo accurate?

46Tbird
06-10-2013, 01:52 PM
Very nice setup! Is your speedo accurate?

Close enough. I've had PMs and all kinds of people telling me to buy a tuner so I can "get the speedometer accurate." My tires are 4% taller than stock, so when my speedometer reads 70, my actual road speed should be 73. That is assuming the stock speedo was 100% accurate to begin with, and they are built with a 5% tolerance. Every time I pass one of those speed displays in a construction zone I've been within 2mph of the reading, same as stock.

gordelis
06-11-2013, 10:35 AM
And you didn't have any issues? There's not a single tire manufacturer that recommends over a 265 on a 8.5 wheel. Are those 275 fronts on a 8.5 wheel in your signature pic?

The front are 255 and the rear 275.
The 275 looked perfect on the 8.5 I had before.
Don't know if you can see it in the pictures...

DirtyD
06-11-2013, 10:41 AM
The front are 255 and the rear 275.
The 275 looked perfect on the 8.5 I had before.
Don't know if you can see it in the pictures...
Holy 4x4 batman!

GTRacerX
06-11-2013, 04:36 PM
So assuming 265/35/20 front and 305/35/20 rear who makes a good street tire that doesn't cost an arm and a leg?

DirtyD
06-11-2013, 04:47 PM
Do a search on TireRack for those sizes and see what pop up. Read customer and technical reviews and go from there. Look for deals and rebates too

46Tbird
06-11-2013, 05:25 PM
So assuming 265/35/20 front and 305/35/20 rear who makes a good street tire that doesn't cost an arm and a leg?

Nobody.

Nitto Invos are available in 255/35 and 295/35, which is close, and about as cheap as you're going to find a set of 20s.

That's about what I paid for my tires, but the 305s only last about 15k miles so that's $650 in tires every 8 months. Fortunately the fronts are at 40k miles and are holding up very well; I will probably get 75k out of them.

re-rx7
06-11-2013, 06:46 PM
Nobody.

Nitto Invos are available in 255/35 and 295/35, which is close, and about as cheap as you're going to find a set of 20s.

That's about what I paid for my tires, but the 305s only last about 15k miles so that's $650 in tires every 8 months. Fortunately the fronts are at 40k miles and are holding up very well; I will probably get 75k out of them.

:Wedgie:

GTRacerX
06-11-2013, 07:18 PM
Nobody.

Nitto Invos are available in 255/35 and 295/35, which is close, and about as cheap as you're going to find a set of 20s.

That's about what I paid for my tires, but the 305s only last about 15k miles so that's $650 in tires every 8 months. Fortunately the fronts are at 40k miles and are holding up very well; I will probably get 75k out of them.

I'm guessing you have drag radials on the back?

46Tbird
06-12-2013, 09:30 AM
Yeah, I wouldn't want to drive one of these cars without them.

Dominic Toretto
06-17-2013, 03:08 PM
So assuming 265/35/20 front and 305/35/20 rear who makes a good street tire that doesn't cost an arm and a leg?

Arm and a leg is relative. On my C5 I was running 18s with a 265/35 and 295/35 BFG Goodrich KDW2s and that was just under $1,000 at Discount Tire with warranty on all four tires. I really wanted to go with the same tires but I found these for a really good price and matching sizes front and rear for the 19s I have.

http://www.treaddepot.com/group/pr4p.html

-Alex