73-87 Chevy _ GMC Trucks > Wheels & Tires

235/85R16 on '80 K20

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1980K20:
Hey, I've finally made one decision on tire size and wheels after months of on/off looking at used and new tires.  It feels like a decision, but I haven't made the order yet. I was thinking about finding some rollers off a van with the same or similar size, but have decided against that.  I've spent probably 6 hours on this topic alone this weekend.

I'd prefer 17" wheels, but have scoured the internet for just what I like and have yet to find them.  Whereas I've found some 16" wheels that I really like and they're reasonable price.

Original tire is:  8.75" wide x 29.5" tall.  Options:
- 245/75r16 (9.6" wide x 30.5" tall)
- 235/85r16 (9.3" wide x 31.7" tall)

I'll talk to sales person before I order, but the website only recommends the 245/75r16.  I see posts where people use the 235/85r16 so sounds like it should work.

Wheel width recommendation surprised me:
- 8" wide, 0mm offset (OEM replacement)
- 7" wide, -6mm offset (optional)

I was surprised at the 7".  The original tires were 8.75" wide, seems that i should be going with 8" wide rim.  I've had bad experience with hitting fenders, favor narrower tires.

This truck has a 2" lift, favoring 235/85r16, but my wife wants me to take it back down to stock.   She doesn't ask for much on the truck, so maybe I'll do that.

My question to the forum is on the wheel width.  My default is the 8" wheel, but is there a reason to go with the 7"?

Thanks,
Mark

Shifty:
Meh, I ran Michelin 235/85-16's on my stock wheels for many o' mile, before switching to Wheel Vintiques 16x8's to run my current BFG KO2's.  FWIW, the Michelin's, while expensive, will give the best ride possible for us Square-types.

1980K20:

--- Quote from: Shifty on March 01, 2021, 08:36:27 AM ---Meh, I ran Michelin 235/85-16's on my stock wheels for many o' mile, before switching to Wheel Vintiques 16x8's to run my current BFG KO2's.  FWIW, the Michelin's, while expensive, will give the best ride possible for us Square-types.

--- End quote ---
Thanks Shifty!

I was looking at Cooper tires, I'll check the Michelin out.

Do you have any lift on your truck?

Mark

Sent from my SM-G965U using Tapatalk

Shifty:
No lift for me! 

1980K20:

--- Quote from: Shifty on March 01, 2021, 11:18:46 AM ---No lift for me!

--- End quote ---

Excellent, thank you!
Mark

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