Biggest street slicks that will tuck in on a 75K20 with 14 bolt full float drum brakes

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75BEASTK20

Junior Member
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Nov 5, 2024
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Location
B.C. CANADA
First Name
Cal
Truck Year
1975
Truck Model
K20
Engine Size
427
I've seen a couple of very nice trucks on here that have some massive rear tires. Not mudders or offroad.
With factory height on my 75K20 what are the WIDEST street slicks I can put on this truck?
I have a set of winters up here in BC
A good regular set for cruising in summer
But I need to find something that won't break loose too much with 540 dynoed torque.
I want 'em tucked in nice but not sure what size to get.
Any suggestions?
 

Grit dog

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Auburn, Washington
First Name
Todd
Truck Year
1986, 1977
Truck Model
K20, C10
Engine Size
454, 350
Can’t say exactly, but short of pro street size tires, you can go pretty wide with the right offset wheel.
I’d suggest measuring clearance with whatever size tire and rim offset you have now and then add width and adjust offset calcs until you get pretty tight front and back.
Consider rolling the fender lip if it’s not shiny new paint.
I’d think you could fit 12” wide potentially (tucked). But factory height they’re not tucked anyway since the truck sits up so high.
 

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