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

[75BEASTK20]

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]

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.

 

[75BEASTK20]

Thanks! Makes sense.