Tire Change

soeasy · May 19, 2008

I have a 2004 K2500HD Crew cab 4x4 - 6.0 , 4.10 rear. Tire size 245/75/16 - would like to change to 295/75/16. This would be a 9.5% larger tire. The revs/mi would change from 662 to 603. Speedo would read 60 but actual would be 65. Would recalibrate for this. Would this change negitively effect the drive train. I tow 9000lbs once a month I drive 50/50 highway/city daily. Would appreciate any info.

Thanks

Kent

Zembonez · May 19, 2008

I have a 2004 K2500HD Crew cab 4x4 - 6.0 , 4.10 rear. Tire size 245/75/16 - would like to change to 295/75/16. This would be a 9.5% larger tire. The revs/mi would change from 662 to 603. Speedo would read 60 but actual would be 65. Would recalibrate for this. Would this change negitively effect the drive train. I tow 9000lbs once a month I drive 50/50 highway/city daily. Would appreciate any info.
Thanks

Kent

Every truck I have ever installed taller tires on lost something in the MPG department. Generally I would say I lost 1 to 2 MPG. In spite of this I have run larger tires on every truck I've had. OEM tires always look so tiny. Never had any other negative effect other than a drop im mileage. Performance generally was not altered much of at all but I don't tow large loads either. That might have more impact.

Hope that helps.