gustheram
Senior Member
I've got a while yet before I plan to do this change as I still have about 15k miles left out of the tires I'm running. But I'm a compulsive planner and researcher and I like to know everything way ahead of time so the research has already started.
I've got the stock 20s on my 2500 and they came with 285/60r20. When I replaced the Transjunks, I had a hard time finding new tires in that size that I thought were worth the money. EXO Grapplers come in that size but I didn't feel like dropping $1700 on tires I'd seen few reviews for. I went with Trail Hogs and they're good but won't last long. So as I begin my search for the next set of rubber, I've found that 295/60r20 is a far more common size. I plan to go a little less aggressive next time around and there are tons of options. Terra Grappler G2s, Discoverer AT3, Open Country AT2, Pro Comp AT Sport, Ridge Grapplers, it's a good list. I'm thinking of trying the Pro Comps for the price tag and the 60k warranty in all sizes (best I've found so far).
So now that we've got the backstory out of the way, I come to you guys for your opinions because I'm on the fence. The 295 is 0.4 inches taller than the 285 and turns 9 revs/mile less. At standard around town speeds, my speedo will be off by about 0.5 mph while highway speeds will have me off by about 1 mph. This is all according to the comparison calculators I've found. So what do you guys think? Should I bother getting the speedo recalibrated for the change in size or leave it as is? I read somewhere that there's a 10% margin of error in stock calibration anyway (can't find where I read that again though) so it looks like I'd still fall well into that. I'm just not sure if it's worth the cost to have my speedo dead on when it's only going to be off by about 1mph at the most. What do y'all think?
I've got the stock 20s on my 2500 and they came with 285/60r20. When I replaced the Transjunks, I had a hard time finding new tires in that size that I thought were worth the money. EXO Grapplers come in that size but I didn't feel like dropping $1700 on tires I'd seen few reviews for. I went with Trail Hogs and they're good but won't last long. So as I begin my search for the next set of rubber, I've found that 295/60r20 is a far more common size. I plan to go a little less aggressive next time around and there are tons of options. Terra Grappler G2s, Discoverer AT3, Open Country AT2, Pro Comp AT Sport, Ridge Grapplers, it's a good list. I'm thinking of trying the Pro Comps for the price tag and the 60k warranty in all sizes (best I've found so far).
So now that we've got the backstory out of the way, I come to you guys for your opinions because I'm on the fence. The 295 is 0.4 inches taller than the 285 and turns 9 revs/mile less. At standard around town speeds, my speedo will be off by about 0.5 mph while highway speeds will have me off by about 1 mph. This is all according to the comparison calculators I've found. So what do you guys think? Should I bother getting the speedo recalibrated for the change in size or leave it as is? I read somewhere that there's a 10% margin of error in stock calibration anyway (can't find where I read that again though) so it looks like I'd still fall well into that. I'm just not sure if it's worth the cost to have my speedo dead on when it's only going to be off by about 1mph at the most. What do y'all think?
