Stock Tire size?

[ntsqd]

A search turned up nothing usefull. I'm looking for what the stock tire size would hav ebeen on a '91 Suburban. I'm trying to do some calcs and I need to know this to figure out what GM had in mind. TIA

 

[Cmoe]

Do you have the RPO codes still in the glove box?

 

[sled_dog]

1/2 ton or 3/4? My 89 3/4 ton had 245/75R16s stock. But thats 3/4 ton obviouslly.

 

[ntsqd]

Sorry, 1/2t
The RPO steeker is still there. No clue what I'm looking for though.

 

[resurrected_jimmy]

235/75/R15 Uniroyal Tiger Paw is what came on my 91 burb silverado

 

[TexasBlazerBoy]

Discount Tire Website

If you go there and put in the vehicle info, they will tell you what the original size was.

 

[ntsqd]

Cool, that gets me a number I can use (28.9") , thanks!!

FWIW: http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=7

And Discount confirmed the size, so thanks again.

 

[Cmoe]

Here is a link for a RPO http://www.angelfire.com/ny2/96transam/rpocodes.html

 

[ntsqd]

Wouldn't you know it? I got a flat the other day in the '91 and the spare is a 235/75-15
doh! Looking there was casual to the most obvious observer!

 

[resurrected_jimmy]

I didn't even think of that..... never would have crossed my mind to puncture a tire to need a reason to dig out the spare and figure out what size it was