I've read a lot of posts on 35s and their pros and cons, but I'm still unsure. So here's a personalized question - I drive a beautiful 1983 Jimmy, manual gears, 305 engine, headers, 2" lift, and I only drive in sand dunes - big big sand dunes. I think my diff gears are stock, somewhere from 3 to 3.7something, and the axles are GM 10 bolts. I don't do rocks or mud, just sand, so I'm not concerned about them breaking. My worry, though, is loss of acceleration. Oftentimes I need a good run-up to get up a long dune. I currently run dedicated sand tires 9.00x15 (33"s) and off the start the acceleration is not brilliant, but good enough. Based on your experience, would going to 35s worsen performance on sand or improve it? I'm thinking of buying Yokohama Geolanders 315/75R16 which measure out to 34.5x12.50 (got 16" rims from a Nissan that fit). This is what they look like: Your comments appreciated.