2006 Grand Prix GXP issues (LS4)

[1BADAIR]

Don't think you can program two diff sizes. What may work is to get a tech 2 and go into the EBCM . Set the size or revolutions per mile to the half way point of the diff between the two sizes. That may be enough to trick the system

[Lucky SOB]

would a 45 height work instead of a matching 35.. ?

It's not a "matching" 35 because that number is a ratio of the tire widths. 35 is 35% of the tire width. So when your tires are different widths, you have to compensate with the height ratio if that makes sense?

For instance, I run a 295/35/18 rear and 275/40/18 front on my TA so the total diameters are pretty close in size.

Also, the people online may have been using a different tire. Manufacturers aren't all equal.

[CODFATHER]

tires are too short in front, waterpump is $400 tops at the dealer, uneven tire wear is normal on these cars, not sure on the idle issue, is everything plugged in around the TB?

Everything seems to be connected and the answer i got from the shop was that the tp sensor was going bad.. I just dont understand how them cleaning it off would cause my car to idle 300-500 rpms higher and have an idle speed of 16mph when im not giving any gas. It's going to eat through my breaks if i dont get this figured out soon

[CODFATHER]

Autozone has a pump for $132. If yours is just leaking, just put on a new o-ring and gaskets.

What kind/brand of tires do you have up front? I was looking for 275/35/18's for my Camaro

http://www.tirerack.com/tires/tires....=735WR8RE970PP

These things are amazing! really good looking tread pattern too. When it was pretty warm the other day (about 72 degrees) I had soo much grip. Literally cut my slip from a launch almost in half from the tires that were on there before. They had awesome reviews on these for awd application. Very sticky tires

[CODFATHER]

It's not a "matching" 35 because that number is a ratio of the tire widths. 35 is 35% of the tire width. So when your tires are different widths, you have to compensate with the height ratio if that makes sense?

For instance, I run a 295/35/18 rear and 275/40/18 front on my TA so the total diameters are pretty close in size.

Also, the people online may have been using a different tire. Manufacturers aren't all equal.

It was actually this exact same tire that they said they purchased
http://www.tirerack.com/tires/tires....=735WR8RE970PP
Which is the main reason why i bought a set. But yea i understand now on the size issue. So i am going to try and find some matching 18x8's for the back i guess. Unless i can somehow run a 35 tire on a 7 inch rim without it riding like crap or looking rediculous

[CODFATHER]

Don't think you can program two diff sizes. What may work is to get a tech 2 and go into the EBCM . Set the size or revolutions per mile to the half way point of the diff between the two sizes. That may be enough to trick the system

Where would I find someone that could do something like this and do it right?

[94ss68c10]

It was actually this exact same tire that they said they purchased
http://www.tirerack.com/tires/tires....=735WR8RE970PP
Which is the main reason why i bought a set. But yea i understand now on the size issue. So i am going to try and find some matching 18x8's for the back i guess. Unless i can somehow run a 35 tire on a 7 inch rim without it riding like crap or looking rediculous

good luck trying to find any 18x8's. . . . you won't, If you do they are $800 a piece new. . .

[hoogiesngrinderz]

Putting the 18x8 in the rear will move the outside edge of the tire out over 1" (27.5mm to be more precise)

18x8 40mm offset
18x7 55mm offset

[SSTODD]

usually a 275 width tire requires a 9 inch rim (ala SS camaro 17x9 wheels)
You are confusing the tire height and "35" aspect ratio which have little to do with the 275 width on a skinny rim.
I would honestly sell the tires and go back to OEM sizes to avoid all the computer issues.

[CODFATHER]

Autozone has a pump for $132. If yours is just leaking, just put on a new o-ring and gaskets.

What kind/brand of tires do you have up front? I was looking for 275/35/18's for my Camaro

You wouldn't happen to want my set would you...? lol Seems like it's going to cause more problems than anything. They still have the little stubs on them. I paid 256 a piece theyre yours for 400

[CODFATHER]

Putting the 18x8 in the rear will move the outside edge of the tire out over 1" (27.5mm to be more precise)

18x8 40mm offset
18x7 55mm offset

Would I be able to run the 18x8 in wheels in the back if I found another set? because I have a set lined up actually but I don't want to jump on it unless it will work ok. Plus, it'll look mean as hell from the back. The rears tires are kind of pathetic looking from behind

[hoogiesngrinderz]

I can't give you a definte yes or no answer, but from what I remember there wasn't enough room to go out 1" on each side.