I have a 2005 1500 with 275/60R20. I want to get a larger tire to look more aggressive but do not want to lift or make any suspension change. Will this larger size fit without rubbing? Will it change my speedometer by a lot? Thanks for your help.

 

yes they will fit.

 

use this for the speedo difference.

http://www.miata.net/garage/tirecalc.html

 

ya you will be fine with that

 

305/50R20's fit, so you'll be fine.

 

305/50R20s are only 32" tall

275/65R20s are 34.1" tall so there is a good bit of height difference.

You still should not have a problem, if you do crank the torsion bars up a little and they will fit great and you will be closer to level.

 

Do you have any trouble with rubbing when you turn?

 

I had no clearance/rubbing issues with 275/65/20 on my 04 2wd so you should be fine