Speed with larger tires

theotherhobbes · 10-27-2009, 01:45 PM

I went from the stock 265/70/17 BFG Rugged Trails to 35/12.50/17 Dynapro MT's. The BFG's had a revs per mile of 658; the MT's are 597. 658/597 = 1.102. So, theoretically, if i multiply my trip mileage by 1.102, that will give me an accurate mileage, correct? (ex. 400 mile trip x 1.102 = 440.87 actual miles) Is my math correct on this? And if so, does that mean that my speedometer readings would be the same? (ex. 60 mph = 66.12 actual mph; 70 mph = 77.14 actual mph)

__________________
2009 2500 QC 4x4 auto 6.7 "electric blue",2" HBS leveling kit, 35" Dynapro MT's, B&W turnover GN

Walbern1 · 10-27-2009, 02:18 PM

Here you go.

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Tire Size.jpg (53.6 KB, 21 views)

theotherhobbes · 10-27-2009, 02:21 PM

Thanks. Thats really close to what I had figured. As a consequence, my overhead mileage is now dead-on-balls accurate with my hand calculations...

__________________
2009 2500 QC 4x4 auto 6.7 "electric blue",2" HBS leveling kit, 35" Dynapro MT's, B&W turnover GN

10-27-2009, 01:45 PM	#1 (permalink)
theotherhobbes Newbie Join Date: Sep 2009 Location: MS Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts theotherhobbes's Truck Pics	Speed with larger tires I went from the stock 265/70/17 BFG Rugged Trails to 35/12.50/17 Dynapro MT's. The BFG's had a revs per mile of 658; the MT's are 597. 658/597 = 1.102. So, theoretically, if i multiply my trip mileage by 1.102, that will give me an accurate mileage, correct? (ex. 400 mile trip x 1.102 = 440.87 actual miles) Is my math correct on this? And if so, does that mean that my speedometer readings would be the same? (ex. 60 mph = 66.12 actual mph; 70 mph = 77.14 actual mph) __________________ 2009 2500 QC 4x4 auto 6.7 "electric blue",2" HBS leveling kit, 35" Dynapro MT's, B&W turnover GN

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10-27-2009, 02:21 PM	#3 (permalink)
theotherhobbes Newbie Join Date: Sep 2009 Location: MS Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts theotherhobbes's Truck Pics	Thanks. Thats really close to what I had figured. As a consequence, my overhead mileage is now dead-on-balls accurate with my hand calculations... __________________ 2009 2500 QC 4x4 auto 6.7 "electric blue",2" HBS leveling kit, 35" Dynapro MT's, B&W turnover GN