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73-87 Chevy _ GMC Trucks => Wheels & Tires => Topic started by: 78Scottsdale on August 22, 2009, 11:24:20 am

Title: 9.50 on 8.75?
Post by: 78Scottsdale on August 22, 2009, 11:24:20 am

The tires on my truck now are 8.75x16.5, can I put a 9.5 inch wide tire on this rim? its a stock 78 K20 white steel wheel.

Title: Re: 9.50 on 8.75?
Post by: zieg85 on August 22, 2009, 12:40:27 pm

yes I have done it in the past with no problems.

Title: Re: 9.50 on 8.75?
Post by: Irish_Alley on August 22, 2009, 11:30:49 pm

some tire places wont do it, do to lawsuits if the tire fail they could say its because it was improperly mounted. from what i heard you don't want to go more that 3" more than your tire size

Title: Re: 9.50 on 8.75?
Post by: 78Scottsdale on August 23, 2009, 09:27:53 pm

Quote from: Irish_Alley on August 22, 2009, 11:30:49 pm

some tire places wont do it, do to lawsuits if the tire fail they could say its because it was improperly mounted. from what i heard you don't want to go more that 3" more than your tire size

Great, I just wanted to make sure with truck tires, I know people put 245/60R14s on their G Bodies while the stock tire size is 195/75R14 :D, I personally have 205/70R14s. 

Thanks guys.

Title: Re: 9.50 on 8.75?
Post by: Da67goatman on February 01, 2010, 07:36:08 pm

I changed tires from 9.50 to 33 12.50 16.5 and had no problems.  In fact they look awesome and provide lots of protection for the rims.  I used 6.75" wide rims too.

Title: Re: 9.50 on 8.75?
Post by: malibu795 on February 28, 2010, 12:10:07 pm

Quote from: 78Scottsdale on August 23, 2009, 09:27:53 pm

Quote from: Irish_Alley on August 22, 2009, 11:30:49 pm

some tire places wont do it, do to lawsuits if the tire fail they could say its because it was improperly mounted. from what i heard you don't want to go more that 3" more than your tire size

Great, I just wanted to make sure with truck tires, I know people put 245/60R14s on their G Bodies while the stock tire size is 195/75R14 :D, I personally have 205/70R14s. 

Thanks guys.

*raise hand....

dotn that 245/60/14 on 5" rim

also put 315/75/16 on a 6.5" rim

Title: Re: 9.50 on 8.75?
Post by: Irish_Alley on March 01, 2010, 01:26:45 am

Quote from: Da67goatman on February 01, 2010, 07:36:08 pm

I changed tires from 9.50 to 33 12.50 16.5 and had no problems.  In fact they look awesome and provide lots of protection for the rims.  I used 6.75" wide rims too.

so your saying you put tires that were 6" wider than your rims? how did they wear? or is that a typo

Title: Re: 9.50 on 8.75?
Post by: Da67goatman on March 01, 2010, 10:27:44 am

Its not a typo, I actually put 12.5s on 6.75 in wide rims.  They are wearing pretty evenly, the edges are wearing a slight bit faster than the center but i think that is due to the fact that i only run 28psi in them.  If I were to do it over I would use the 8.25 in wide rims and a spacer to eliminate the rubbing rather than the super skinny rims.

Title: Re: 9.50 on 8.75?
Post by: Irish_Alley on March 01, 2010, 10:56:13 am

I WIULD OF THOUGHT THEY WOULD WEAR IN THE CENTER MORE THAN THE EDGE

Title: Re: 9.50 on 8.75?
Post by: malibu795 on March 01, 2010, 09:45:20 pm

Quote from: Irish_Alley on March 01, 2010, 10:56:13 am

I WIULD OF THOUGHT THEY WOULD WEAR IN THE CENTER MORE THAN THE EDGE

dpeending on how much air pressure...