47-55.1 largest tire I can put on a 16 x 6 rim and still fit my truck?

[mr48chev]

That calculator page is real handy. One thing I like is that it tells you how much changing tire size will throw your speedometer off.

Remembering that back in the day one of my buddies had a 55 Chevy that he put 800 15 tires on the back of for the "gasser" look He had it figured out how far the speedometer was off at what speed but let his girl friend drive it to go shopping one day and she got a ticket for speeding because she was running down the highway with the speedometer on the exact speed that the limit was but was doing 10 over. He ended up going to court with her with the calculations that showed that she was driving at what she thought was the legal speed limit but the car was going faster and got her out of the ticket. Last time I rode in the car he had a note taped to the dash that showed what you wanted the speedo to read to be legal at a set speed such as 22 = 25 and 50 = 60.