i'm going to go ahead and raise it up...

my 22's are 35 pounds each... A 20" wheel would have to be solid all the way through to weigh that much.... I could just see some dude at the tire shop trying to mount and balance a 120 pound wheel. and if they do weigh even close to that, you might want to check to see if your brake pads are not worn to the metal.

 

Best time i had with the 20's on was a 16 flat. I ran it once before the 20's on and ran a 15.7, then went the following week with them on and ran and 16.7 or .8, somewhere around that area.

 

You must of had them mounted at a tractor shop and they filled them full of calcium.