Vice_Squad_29

What are the widest tires I can mount on my tock 15" rims? Any suggestions of good tires or brands to look at? Looking for better grip than my current rubber.

greezemonkey

I had 245/55r15 on my rims at one time. The tire had a noticable curve in the side wall, my rims were 7"wide.

91 GTA Ramair2

On stock 15x7's you can fit 275/60R15's and 295/50R15's but that it thats maxed out.............

235/60R15's.

245/60R15's.

255/60R15's.

are the size's that would be i deal.....

Pro

Yep, but I would HIGHLY recommend against it. I did this on my truck and I have some major warping within the center of the tire's tread. Email me if you want proof (pics).

91 GTA Ramair2

so would I man as I stated the 235's 245' and 255's are the tires that will fit right on them.....

too make 275's and 295's work with out wrecking them is you have too run them on low air pressure but then they don't live very long tho.........................

90rocz

I have a few magazines reserved for "Important" info reguarding my 3rd Gen. One is a "Car Craft"(March 2000) article on "Biggest Meats for Your Muscle car". In there they tested wheel/tire combo's for many different year/model cars.

For the 3rd Gens:

**In 15" (15x8 wheel)they found that with a 4.5"backspacing front AND rear; a ratio of "55" or less, with a section width of 255.(ex; 255/50/15's)

>>This was the widest they could get w/o rubbing a tie-rod end or something.(I know some people running bigger tires, but they do rub every now & then..)
They also showed that the rim size really affected the tires actual size, they had 2 - 26 X 11.50's, with one on a 15" rim the other on a 16" rim; the one on the 16" rim was 1-Full inch taller, even with the "same designation" on the sidewall...Also the one on a wider rim was measurably wider than the same tire on a narrower rim.<<

**In 16's (16x8 wheel) they ended up with a 4 1/2" backspacing up front, and a 5 1/8" backspacing rear, they could use with ratio's less than "55" or less and a section width of 255.

**In 17" (17x9 wheel front) they ended up with a 5 1/2" backspacing up front and rear. And tires with an aspect raio of "40" or less, and section width of 255 front / 275 rear!

**In 18" (18x9 1/2"wheel) they arrived at a 5 1/2" backspacing front, and with an (18x10"wheel rear) backspacing of 6.0" they could get tires with raio's of 35 or less, and a section width of 275 front / 295 rear!!
As the rims get taller, they clear suspension parts easier, and can use wider tires...

Vice_Squad_29

Thank You all for your help. I am going to take this wealth of knowledge to the bank!

91 GTA Ramair2

that make awsome semce there guy's....

on my 91GTA i'm running 235/60R15's in the front and 295/50D16's in the rear.........

I got 2 of them 15" GTA look alike's for the front...

Gives it a slight angle not much but some...

Chris`s85Z28

I have P235/60R15 up front and P255/60R15 out back it looks awsome the tires are Good year Eagle GT II I highly recommed them.

CamaroZ28Coupe

thats sounds like it would look good but do you have 15x7 or 15x8 on your camaro, i have the 15x7 in gold on my 83 and the 215 65r 15's look like skinny truck baloon tires

91 GTA Ramair2

i got 15x7" rim's on the front of my 91 GTA that have 235/60r15's on them.

and 8x16" rim's with 295/50R16's on them......

fit real nice..........


ues the 255's will fit you 15x7" rim's fine..

Chris`s85Z28

I have the 15X7 Z28 rims I`ve seen the 215 65 15 and they are wayyyy to skinny I wouldn`t go past 255`s though because there the widest you can go that look good the tread is as wide as the rim and the side wall stick out just the right amount very sweet looking I might have some pics of the in my site

Sorry I don`t have any pics of the 255`s but the pics in my site are 235 60 15 all 4 corners

91 GTA Ramair2

215/65r15 what in the holy hell.........


My RS had 235/60R15's stock even siad so on the door Jam...

Vice_Squad_29

Thanks again guys for your help!!!

91 GTA Ramair2

No problem glad to be of some help...