15" tire sizes & brands for GMC 1000 panel Big Block v6?

[Chuck78]

I was looking for a little guidance / opinions on tire selection for the front of my 1962 GMC 1000 Panel Truck. 2 wheel drive, half ton.

It's got an 800 lb GMC big block truck V6 , heavy beasts compared to a 650 lb 454 v8 or 500 lb sbc, so I have been looking considerably at the load ratings of tires when considering them.

My favorite classic road gripper Firestone Firehawk Indy 500 is no longer available in 15"

I still have four 50% tread 275/60r15 Firestone Indy 500's on 15x8 5 lug Torque Thrusts for the rear. For now, front is 6 lug still, late 70's blazer aluminum 15x7's with ancient G60-15's (i.e. 245/60-15). Sporty profile but slightly too small diameter (26"-ish) for big wheel wells. I had to drop the torsion bar ride height a good bit for cosmetic reasons.


Sizes:
*245/60-15
Great fit on 15x7, higher load ratings than 255/60-15, sporty tread profile, slightly small cosmetically on diameter (imo)

*255/60/16
Acceptable fit on 15x7, great fit when I swap to the 15x8 5 lug disc front, not as high of load rating as 245/60-15 though

*235/70-15
Great fit on 15x7, minimum width posdible for 15x8 5 lug conversion. Big plus - same height as the rear 28" 275/60r15's.


Opinions on best size for looks/handling/load ratings?