Tire/rim size for 1989 firebird formula

[busch]

I have a 1989 firebird formula v8 and I was lookin at gettin the firehawk indy 500's, from tirerack.com. They got awesome prices, $66 per tire actually, and i was wonderin what the tire size was for this car. Also, I was wonderin what tire size would fit on 16 inch rims, at least i think thats what i have, they're the original one's, so if anyone knows the size of the original 1989 firebird rims, that would be helpful. the tires i was looking at are 235/60SR15, and i thought i needed a 245/70SR16 tire. so i dont know which one i need to get, cause i dont know what size the rim is, so suggestions on tire size AND rim size would be really helpful. Thanks

[busch]

ok, I found out what I needed to know, now for a general question. What is the difference between the 235/70SR16 and 245/70SR16. Also, I was wondering what the 235 and 245 mean, if thats wheel diameter or what, and then what the 70 means, if thats the width or what. Also, the tire i have on my car now is a 225/60R16, so in getting a larger tire, which are the recommended tires for the car, with the 235 or 245 and the 70, am i going to run into any problems?

[CreepingDeath94]

The 235/245 is the tire width, in millimeters. So, the 245 is a wider tire. The 70 is the height of the tire basically. It is a ratio between the width and height...all I am possitive about is that the lower that second number, the lower profile tire it will be.

[CreepingDeath94]

Oh, for the second part of your qeustion, I am pretty sure the 245 will fit your car. If its for an '89 Firebird anyway. I had a 275/45/16 on my '87 Trans-Am, but it was on the rear only. The front had 245's so I could still turn wothout rubbing the crap out of my fenderwell. hope that helps.

[silver87ta]

I've got Goodyear Eagle GT II's on mine, and they're 245 50 R16, and I have no problems with them.