Tire Size vs 4x4 operation question

Pearce Trucking · 12-04-2008, 02:23 PM

Hey guys, I just purchased my first Dodge and have a question. The truck is a 2006 3500 4x4 big horn. I have had the truck for a couple of weeks, but today when I was checking all of the tire pressures I noticed that my front tires and rear tires are different sizes. I guess I did not notice this right off the bat as all 6 tires are the same brand/kind and all looked new so I paid no attention. But now I see that the rear tires are 235/80/17 (which according to my door sticker, are correct) and the front tires are 265/70/17. Why would someone do this? Now I see that I cannot rotate my tires, and further, can I not even use my 4 wheel drive?? Front and rear diffs are 3.73 so if the tires are different size, wont this tear up my transfer case? Or is this a common practice on these trucks to get a wider tire on the front? Dont want to tear my truck up, but I do use the 4 wheel drive alot as I use my truck commercially and travel up north alot. Thanks for your help.

terminaltsi · 12-04-2008, 03:10 PM

you're fine. that's normal for a dually. the overall diameter is the same. google a tire size calculator and plug in your numbers. you'll see they're the same height and that's all your axles and transfer case care about.

__________________
'99 2500 5 speed, 4x4, gauges,Quadzilla ADR, Smarty, BHAF, 5" turboback, 315/75/16 maxxis bighorns, Airdog, 13" Valair,3000k HID's, HID off road spotlights, LED back up lights, LED interior lights,alpine/cerwin-vega/mmats audio.

CTD4ME · 12-04-2008, 04:28 PM

Your rear tires are 31.8 in and your fronts are 31.6 This could be the difference in running a new set of tires on one axle and a worn set on the other axle,, at any rate you will be fine..

Pearce Trucking · 12-04-2008, 05:34 PM

OK guys thanks!

12-04-2008, 02:23 PM	#1 (permalink)
Pearce Trucking Cummins Enthusiast Join Date: Nov 2008 Location: Eldorado Illinois Posts: 207 Thanks: 0 Thanked 0 Times in 0 Posts Pearce Trucking's Truck Pics	Tire Size vs 4x4 operation question Hey guys, I just purchased my first Dodge and have a question. The truck is a 2006 3500 4x4 big horn. I have had the truck for a couple of weeks, but today when I was checking all of the tire pressures I noticed that my front tires and rear tires are different sizes. I guess I did not notice this right off the bat as all 6 tires are the same brand/kind and all looked new so I paid no attention. But now I see that the rear tires are 235/80/17 (which according to my door sticker, are correct) and the front tires are 265/70/17. Why would someone do this? Now I see that I cannot rotate my tires, and further, can I not even use my 4 wheel drive?? Front and rear diffs are 3.73 so if the tires are different size, wont this tear up my transfer case? Or is this a common practice on these trucks to get a wider tire on the front? Dont want to tear my truck up, but I do use the 4 wheel drive alot as I use my truck commercially and travel up north alot. Thanks for your help.

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12-04-2008, 03:10 PM	#2 (permalink)
terminaltsi Diesel Head Join Date: Apr 2008 Location: Lou-evil KY Posts: 1,053 Thanks: 11 Thanked 9 Times in 9 Posts terminaltsi's Truck Pics	you're fine. that's normal for a dually. the overall diameter is the same. google a tire size calculator and plug in your numbers. you'll see they're the same height and that's all your axles and transfer case care about. __________________ '99 2500 5 speed, 4x4, gauges,Quadzilla ADR, Smarty, BHAF, 5" turboback, 315/75/16 maxxis bighorns, Airdog, 13" Valair,3000k HID's, HID off road spotlights, LED back up lights, LED interior lights,alpine/cerwin-vega/mmats audio.

12-04-2008, 04:28 PM	#3 (permalink)
CTD4ME Cummins Nut Join Date: Aug 2008 Location: JOPLIN MO Posts: 374 Thanks: 7 Thanked 2 Times in 2 Posts CTD4ME's Truck Pics	Your rear tires are 31.8 in and your fronts are 31.6 This could be the difference in running a new set of tires on one axle and a worn set on the other axle,, at any rate you will be fine..

12-04-2008, 05:34 PM	#4 (permalink)
Pearce Trucking Cummins Enthusiast Join Date: Nov 2008 Location: Eldorado Illinois Posts: 207 Thanks: 0 Thanked 0 Times in 0 Posts Pearce Trucking's Truck Pics	OK guys thanks!