tire sizing question... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

McSwine · 08-15-2007, 03:52 PM

I recently got an '83 that has 30 x 10.5 x 15 tires on it. I noticed that tirerack does not list any for that size, but there are a ton of them for either 31 x 10.5 x 15 or 30 x 9.5 x 15. I'm not sure about the wheel width...they are some sort of the factory rallys. I would prefer to go with the larger tire, but it looks like it might be close, clearance-wise. Anyone got an opinion?

Ivan D. · 08-16-2007, 01:23 AM

My truck has some 15x8" American Racing wheels that may or may not have been a factory option, and I have 32x11.5 in the front and 33x12.5 in the rear, they all clear well. By the way tires almost always run small, my fronts are actually 30.5" in diameter, and the rears are exactly 31" in diameter, so those 31s you're looking into may actually be 30" or even smaller.

79blazer · 08-16-2007, 07:11 PM

I ran 31X10.5 for a few months with no problems on my blazer. And it is a 2 wheel drive. My rims are the 6.5x15 standard style, though.

McSwine · 08-17-2007, 10:34 AM

Thanks

08-15-2007, 03:52 PM	#1
McSwine Registered User Join Date: Jun 2007 Location: Arkanasas Posts: 85	tire sizing question... I recently got an '83 that has 30 x 10.5 x 15 tires on it. I noticed that tirerack does not list any for that size, but there are a ton of them for either 31 x 10.5 x 15 or 30 x 9.5 x 15. I'm not sure about the wheel width...they are some sort of the factory rallys. I would prefer to go with the larger tire, but it looks like it might be close, clearance-wise. Anyone got an opinion?

08-16-2007, 01:23 AM	#2
Ivan D. glamoros piece o' lowlife Join Date: Mar 2007 Location: Redford, MI Posts: 1,164	Re: tire sizing question... My truck has some 15x8" American Racing wheels that may or may not have been a factory option, and I have 32x11.5 in the front and 33x12.5 in the rear, they all clear well. By the way tires almost always run small, my fronts are actually 30.5" in diameter, and the rears are exactly 31" in diameter, so those 31s you're looking into may actually be 30" or even smaller. __________________ The more I drink, the more I drink, the more I drink... diesel, reg cab, long bed, 4 across the rear, single stack, wooden stakes, and lotsa lights - the Hay Express

08-16-2007, 07:11 PM	#3
79blazer Registered User Join Date: Aug 2006 Location: Mesa, Arizona Posts: 136	Re: tire sizing question... I ran 31X10.5 for a few months with no problems on my blazer. And it is a 2 wheel drive. My rims are the 6.5x15 standard style, though. __________________ 79 Blazer Cheyenne, 2wd 305 3.42 stock 85 Caprice, TBI converted, new 350 crate motor, Monte Carlo SS Wheels, Bilstein shocks,

08-17-2007, 10:34 AM	#4
McSwine Registered User Join Date: Jun 2007 Location: Arkanasas Posts: 85	Re: tire sizing question... Thanks

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