General HTS

[Harold1950]

Hey guys finally decided to replace the Dunlops on my 2005 Sport V8 with the General Grabber HTS. Went from 265 65 17 to 265 70 17's. I chose those tires because I won't be doing any off roading except for an occasional dirt/forrest road. So far the ride is smoother, handling/cornering etc is better. Only difference is that my computer now shows anywhere from3-5 mpg to 13.3 mgp. Any ideas why the computer is acting so weird? with the Dunlops it showed anywhere from 14-18 mpg. Hopefully my mpg hasn't dropped off that much. The new tires are only (supposedly) 3lbs heavier that the old ones. Thanks in advance.......Harold

 

[DaveS]

You changed the outer diameter of the tire, wereas your computer thinks it's still the same - the computer measure will be off as a result. Your are actually travelling more miles than the computer thinks you are, hence the mpg display is low - you are also going faster than the speedo says so be careful!

 

[Harold1950]

thanks Dave, I knew the speedo would be off I was just curious about it displaying such a difference in mpg. Guess the 1" height makes a difference with the computer. The V8 got almost 16-17mgp if I kept it below 2000 rpm's (close to 65mph) hopefully the mpg's won't change that much. I've only had them 5 days so time will tell.