1986 K10 Stock height tire size

[Shamrock Motors]

Hello all!
I am working on a 1986 K10 short bed pickup. It has stock size tires which I believe are 31". Would any
one know what the biggest tires are that would fit in the wheel wells without any modifications ? The stock
tire size always looked small but if I go bigger I want to make sure that there wouldn't be any turning
or rubbing issues.

Thanks

 

[nvrenuf]

It depends on the specs of your wheels.

 

[Ricko1966]

And what offset/backspace wheels you run
Edit sorry didn't read the post above correctly.

 

[aasleson]

This is an 86 with factory suspension and 31x10.5x15's on factory rallies

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[nvrenuf]

Some people report having been able to get up to a (narrow) 35” tire on stock wheels, I’d say a (narrow) 33” is the safe bet.

Those running boards may affect what fits since they hang lower than the fender and the tire moves slightly rearward when the suspension is compressed.

 

[awar]

Here is my stock height 84 K3500 with 285/75-16 BFG MT. 33” tall and clear with real tire chains. I trimmed the fender and stepped the running boards. Since 2005, many snowy winters with chains all the way around.

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