New Tire Recs

Will be limited in tire selections in that size. BFG is a good one though.

I'd lean to 275/60/20 since its a bigger tire than 285. Much greater selection in that range.

mastercraft and coopers are great tires for great prices.

Anyone have these exact tires can speak to the look,noise, and durability?

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Don't feel like explaining the rest, but 275 and 285 is the width in millimeters BFG ATs are good tires that will last a long time

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gotya, so I'm guessing 60 would mean a taller tire as opposed to the 55? I must have had those two specs backwards

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School me a little in the sizing please. When you say 275/60 is bigger, do you mean wider, taller, both?

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The number comes out like this:

(width)/(aspect ratio)/(rim diameter)

So let's break down my factory spec size to get the entire wheel diameter:

275 (width) x 0.55 (aspect ratio) = 151.25
151.25 x 0.03937 (convert to inches) = 5.95 (from edge of rim to edge of tire)
5.95 x 2 (to get both portions of tire in diameter) = 11.9
11.9 + 20 (rim diameter) = 31.9 inch diameter

If you have a large width and a low aspect ratio, you will need to most likely worry about rubbing your sway bar at full lock. If you get a tire that has both a large aspect ratio and a large diameter, you will have to worry about rubbing everywhere.

Check on GM forums to see the max tire size with a level. I think you could fit 33s (285/60/20 = 33.5"). But you may want to double check.

This is a good website to use
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I don't understand why they ever started using that commie formula to measure tires. What in the hell was wrong with walking into the tire shop and asking for 33x12.50x16's?

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Thanks Obama

I only buy metric tires for my wife's van. Still rocking my 31x10.50R15 tires on the Jeep.

I have the Grabber at's...tread pattern like the bfg ko's. Not a bad tire so far. I'm going more aggressive next time. Something like the bfg ko2's, gy duratrac's or Mickey Thompson atz's. 33's fit most 2" level kits. F150's can fit 34's with 2.5" level as long as they're not too wide...probably less than 12". Also depends on factory wheels or aftermarket wheels and the amount of offset. Just have to talk to a knowledgable tire shop or do some research.