I bought a 2005 gtp today with GXP rims and the car needs new tires.. I know the gxp uses different size tires on the front and back. What size should I put on my gtp? Should i put all the same size ?
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11-27-2018
I bought a 2005 gtp today with GXP rims and the car needs new tires.. I know the gxp uses different size tires on the front and back. What size should I put on my gtp? Should i put all the same size ?
11-28-2018
Check to make sure you actually have 2 different sized rims first. People like to swap them to have 4 of the same size when putting them on other cars.
You can run all the same tire even if they are staggered. I don't know what the best tire is for that, but I know it's been brought up on here before.
11-28-2018
Same size rims. They are the GXP rims. Tire size is all the same st the moment 345-45-18.
11-28-2018
are you sure it's a 345? i'm willing to bet you meant to say 245. if that's the case I would stick with that size because it's way more common than the size on the actual GXP. ask me how i know.
11-28-2018
GXP comes factory with 18x8 rims in front, but 18x7 rims in back.Originally Posted by GrandPrix1118
11-28-2018
It has 245/45/18 s on it. Front and back. So if I have GXP rims. Just make sure the 18x8s are in the front ?? Also I think I have a GT. When I start it up. It says wide track on the screen. I believe it was top swapped with supercharger / heads
11-28-2018
It won't make a difference on a non-GXP, because GXP suspension is different, but yeah wider in front on a FWD. Being in Detroit, it's entirely possible you have aftermarket Alcoa "GXP" rims, as they are all over craigslist for a good price.
GTP says "Widetrack" too. Does your info center have an "Engine Boost" page?
11-28-2018
245/45/18 is what you need to stay with for correct speedo read out.
11-29-2018
Yes. It says engine boost. Like when you hit the gas. The bar fills up. Other than that, nothing else about boost. The trunk says GT but the guy I bought it from said he replaced the trunk. What else are some signs that it’s a GTP or a GT?
11-29-2018
The trunk has the RPO codes, so that's out.
If it's got a supercharger, it's probably factory. Look at the intake and manifolds. Topswaps are a lot of work, you wouldn't do one and not upgrade those too. If it was sold to a dealership, the VIN wouldn't match the engine type either and might raise some flags.
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