340 Build Advice

I dunno, 72blunblu probably drives his car more than almost any of us and has 18's. The thing is, nearly all of these tires have "inset beads" so you'll not hit them with a casual rub, you'd have to hit pretty hard. I'm going on year 7 -> maybe 10k on it and I live in SE MI which is not a place with good roads and haven't damaged any wheels. My DD's even have 17" wheels with the same rolling diameter and have never damaged them. These days it is the difference between having crap tires like Radial T/As or Cooper Cobras and tires that can put power down (and go around a corner). You don't buy 400 treadwear M+S tires with "A" traction rating and expect them to be very good. Tire tech has come a long way. The 200 treadwear stuff you can buy in 17s and 18s are wildly sticky in comparison.

Other thing I know is the rear suspension setup varies for a lot of people. I have stock height ESPO 6 leaf springs with a stock height pinion snubber and the hotchkis rear sway bar, poly bushings and nothing else. I feel like the jacked up rearend crowd or the tall MP pinion snubber doesn't help. Those springs will be 20 years old this year. they always worked well and no wheelhop at all. My friend has the same on his Demon so maybe other setups don't perform as well for traction either.