How are these rims called.They are 15 inch and pretty sure they were standard but I can't find their name thou they have the Pontiac name on them.

Also what is the most white tire that works on them.I see 215/65 R15 was the default.Will 235 fit on that.

thanks in advance.Sorry if the question looks stupid but here in europe they are really hard to find ,especially if you are trying to keep the originality.

 

I believe those are just called Formula wheels. A 235 will fit but 225 might look a little better.

 

you can fit a 255 tire

 

thank you.I thought 16 inch rims were on formulas .

Of course with 235 wont be /65.As the tire gets wider the ratio has to get smaller to keep the size.

This sure sounds interesting.What is the exact size please .
Wonder if I'll find some pics ...255 seems really wide compared to stock 215 but probably look really good.

 

I think the early models had 15's and then came the 16's...I'm not positive though. I'm more of a camaro guy.

Ah yeah, that makes sense.

 

I Think Those Were Referred To As Turbo Wheels.

 

Ive heard them called "20 slots" too.

 

My 91' base model bird came with them ... I sold the whole set for 75$ in perfect condition

91' firebird .. 305 TBI .030 over , balanced bottom end , speed pro hyper flattops , 10.6:1 CR , all ARP rod bolts and main studs , melling HV oil pump , trick flow super 23 175cc heads, Howards HR 214/218@.050 .488/.495 lift on 114 LSA , full roller 1.6 RR = .520/.528 lift , summit dual plane intake port matched , shorty headers into 2.5" Y w full 3" flow master system and 3" cutout in front of axle , msd billet dizzy, 620cfm TBI , custom CAI , tubular adjustabke LCA pan hard , umi torque arm wonder bar , BMR trans cross member , COMP engineering SFC's, disc rear w 4.10's, drilled an slotted rotors, EBL flash , VRFPR, WBO2,

 

wow .You should see the prices in Europe....