SuperDad

Just bought a 2000 LX470 (Golden Preal) and I have a set of 20" Tundra BBS (powder coated gloss black) wheels that I want to put on it. Whats the biggest tire size I can run? I also have 1 1/4" spacer if needed. Thinking about 275/60R20, 305/55R20, or 285/55/R20's

hankinid

I'd ask that question on ih8mud.com, probably in the 100 series far section.

I can't help with 20's, but if you wanted to double check height, largest I've seen is a 305-75 16. I personally would go with a 60...55's imo are ok on a graded dirt or gravel road, but you can do lot better with 60's as the absolute bare minimum. If it's the queen of the mall, 55's should be just fine.