4x4ord
Canada
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Joined: 12/23/2010
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45Ricochet wrote:Don't the 20's have a higher load rating?
Tire manufactures are always behind the leaning curve when it comes to trucks.
By the time you need new tires there should be plenty of options in the 20" variety.
x2. That is the logic I would use to justify getting 20" wheels. But really, I like the look.
The 275/65 r 20 are 34 " tall. The 265/70 r 18's are 32.6". This means the 20" tires are only raising your truck by less than 3/4 of an inch. (1/2 the difference in diameter)
2011 F350 SRW short box 4x4 CC 6.7 PS King Ranch
B&W TurnoverBall and Companion
2003 Citation Supreme 34 RLTS
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SoCalDesertRider
SanDiego, CA, USA
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Joined: 12/14/2003
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4x4ord wrote:45Ricochet wrote:Don't the 20's have a higher load rating?
Tire manufactures are always behind the leaning curve when it comes to trucks.
By the time you need new tires there should be plenty of options in the 20" variety.
x2. That is the logic I would use to justify getting 20" wheels. But really, I like the look.
The 275/65 r 20 are 34 " tall. The 265/70 r 18's are 32.6". This means the 20" tires are only raising your truck by less than 3/4 of an inch. (1/2 the difference in diameter) By going with the taller tire, you're giving up some axle gearing (torque) advantage, as well as giving up some braking performance. Taller tires are harder to stop, and harder to get going.
Going from a 32.6" tire to a 34" tire with 3.73 axle gearing has a similar effect on torque as keeping the tires the same size and changing the gearing to 3.55.
05E350 6.0PSD
97F350DRW 7.3PSD 4x4 4.10 11' flatbed
98Ranger
69Bronco ATC250R CR500
20' BigTex flatbed carhauler
Callen Camper
92F350 CrewCab 4x4 351/C6
B&W TurnoverBall, Curt Magnum V
HD Springs Bilsteins,
285/75-16E BFG AT on 16x8 Stocktons
4.56's & LockRite rear
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gmcsmoke
Butler
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Joined: 07/13/2008
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SoCalDesertRider wrote:4x4ord wrote:45Ricochet wrote:Don't the 20's have a higher load rating?
Tire manufactures are always behind the leaning curve when it comes to trucks.
By the time you need new tires there should be plenty of options in the 20" variety.
x2. That is the logic I would use to justify getting 20" wheels. But really, I like the look.
The 275/65 r 20 are 34 " tall. The 265/70 r 18's are 32.6". This means the 20" tires are only raising your truck by less than 3/4 of an inch. (1/2 the difference in diameter) By going with the taller tire, you're giving up some axle gearing (torque) advantage, as well as giving up some braking performance. Taller tires are harder to stop, and harder to get going.
Going from a 32.6" tire to a 34" tire with 3.73 axle gearing has a similar effect on torque as keeping the tires the same size and changing the gearing to 3.55.
Too bad GM's 20" tire is 265/60/20 and is 32.5" in diameter.
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rvgwen
Texas, Aransas Pass
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Thank you all for your input. All this info will help us get the best truck for our use. Gwen
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SoCalDesertRider
SanDiego, CA, USA
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Engineer9860 wrote:Can you get the 20s on the Chevy 3500SRW?
The last I checked the 3500SRW was only available with 18s. To get the 20s you had to drop down to the 2500HD. Interesting point.
Definitely not worth it to get the 2500 just to get 20" wheels. The 3500 with 18's is a much better choice. The 3500 dually with 17's is an even better choice.
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AZ T&T
Mesa, AZ
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In the owners manual for my 2011 2500HD it says that you shouldn't take the truck off road if you have 20" wheels.
BTW: the 6'6" bed is the standard bed, the short bed I believe is 5' long.
AZ T&T
2012 Jayco Eagle Super Lite 29.5RKS
2011 Chevy 2500 HD 4x4 Duramax
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Gordon2448
Central Coast, California
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45Ricochet wrote:Gordon2448 wrote:Oh ya, the truck is completly stock.
LOL
No dream catcher on the mirror yet?  Well, since you mentioned it. I do have a necklace my daughter gave me around the rear view mirror. She wont let me take it down, yet!!
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Gordon2448
Central Coast, California
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Just purchased a 2012 3500 DRW. I have NO problems pulling a TH weighing 18000.
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45Ricochet
North Idaho
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Gordon2448 wrote:Oh ya, the truck is completly stock.
LOL
No dream catcher on the mirror yet?
06 Ram 3500 CC LB Laramie 4x4 Dually 5.9 Cummins Smarty Jr 48RE Jacobs brake
GVWR 12,200 RAWR 9350
06 Grand Junction 34' High profile 15500 GVWR 3200 pin Mor/ryde 5500 Onan genny Dual A/C Wet bolts
27' Hallett 502, 500HP
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Gordon2448
Central Coast, California
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Oh ya, the truck is completly stock.
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