Beebs In 2018 had a 2-ton 51 6400 farm truck,cut wheelbase to 98 inches,was guessing on 5x13 speedway springs truck road OK but did bottom out. So got 5x15 springs opened it with my winch truck put em right in,I wouldn't say it rides like a baby buggy but it's a lot better.Good enough ive driven it 9000 miles .Has 8.25x20's and is the best pick-up ive had,little boys love that truck !!