3500 LB SRW Club - Page 6 - Chevy and GMC Duramax Diesel Forum
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post #51 of 173 (permalink) Old 02-05-2017, 10:25 PM Thread Starter
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Need some help from the 3500 peeps. Anyone running 285/65/18's on stock wheels? I'm looking at replacing the 20" Denali wheels with 18' Denali wheels. I think the TPMS and lug nuts will swap over? Truck (see sig.) is stock with the bars cranked 3 full turns. I want to keep my mud flaps. Any input is appreciated. PM me. Thanks.
32.5" tire, should fit, 3 turns on the torsion keys doesnt mean a lot. How much higher is the front end than stock? If you are leveled, you should clear the tire, might need to slightly trim the fender liners. Nice thing about those rims is they arent crazy offset which helps... TPMS will work, they just need to be re-programmed to the truck. Any tire shop can do that for you.

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post #52 of 173 (permalink) Old 02-06-2017, 11:56 AM
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32.5" tire, should fit, 3 turns on the torsion keys doesnt mean a lot. How much higher is the front end than stock? If you are leveled, you should clear the tire, might need to slightly trim the fender liners. Nice thing about those rims is they arent crazy offset which helps... TPMS will work, they just need to be re-programmed to the truck. Any tire shop can do that for you.
@novaman64. Thanks for the reply. I'm not leveled. The front is maybe 1 1/2"- 2" taller than stock and I still have about a 2" rake. I'm not sure what the offset is on OEM wheels, but it looks like the tires are about an inch wider than stock ones.


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post #53 of 173 (permalink) Old 02-06-2017, 12:51 PM Thread Starter
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@novaman64. Thanks for the reply. I'm not leveled. The front is maybe 1 1/2"- 2" taller than stock and I still have about a 2" rake. I'm not sure what the offset is on OEM wheels, but it looks like the tires are about an inch wider than stock ones.
Prolly going to rub then unless you do the big tire fender mod.

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post #54 of 173 (permalink) Old 02-06-2017, 02:36 PM
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@novaman64. Thanks for the reply. I'm not leveled. The front is maybe 1 1/2"- 2" taller than stock and I still have about a 2" rake. I'm not sure what the offset is on OEM wheels, but it looks like the tires are about an inch wider than stock ones.
You should be fine. Newer trucks have 3-4" of rake to them vs the 2-2.5 previous to 2011. So your already what a previous truck was consider leveled. Owners manual can walk you through reprogramming tpms, pretty easy and takes longer to find the page, than to due the work.

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post #55 of 173 (permalink) Old 02-06-2017, 03:51 PM
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You should be fine. Newer trucks have 3-4" of rake to them vs the 2-2.5 previous to 2011. So your already what a previous truck was consider leveled. Owners manual can walk you through reprogramming tpms, pretty easy and takes longer to find the page, than to due the work.
@R Shanta. Thanks for your reply. I searched quite a few threads and couldn't find much info. on the wheels/tires. I'm hoping to increase max load and ride by going with 18" tires. The specs look pretty close between LT265/60/20 and LT285/65/18. The 18's have approx. 1 inch wider section width. Looking at Cooper ST Maxx.


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post #56 of 173 (permalink) Old 02-06-2017, 04:58 PM Thread Starter
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Quote:
Originally Posted by R Shanta View Post
You should be fine. Newer trucks have 3-4" of rake to them vs the 2-2.5 previous to 2011. So your already what a previous truck was consider leveled. Owners manual can walk you through reprogramming tpms, pretty easy and takes longer to find the page, than to due the work.
Got LMM on the mind. LOL, didnt realize he had a LML....
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post #57 of 173 (permalink) Old 02-06-2017, 05:39 PM
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@R Shanta. Thanks for your reply. I searched quite a few threads and couldn't find much info. on the wheels/tires. I'm hoping to increase max load and ride by going with 18" tires. The specs look pretty close between LT265/60/20 and LT285/65/18. The 18's have approx. 1 inch wider section width. Looking at Cooper ST Maxx.
You can also use a feeler gauge with your current setup to ensure that your wheel/tire will fit. Make a cardboard, wood, metal or whatever you have laying around that is half the diameter of the difference of the current vs desired size. Turn the wheel and check for clearances. You should check both sides due to tolerance stack up and I my experience any thing with 1/2" may rub. If you do not have the clearance, jack up the truck in 1/2" increments and check again. Once you have the clearance between the tire and fender, checkout the clearance between the frame stop and UCA. Note the fender to ground distance. Then keep jacking the truck up until the UCA and frame stop distance no longer changes or you pick a tire up. If the droop distance is less than 2-3" the ride is going to be a bit harsh and it might be time for a lift or smaller tire.

For reference on my LMM summer wheels are 18x9 and 18mm offset running a 305/65/18. Tires rub slightly on the UCA.

Rob

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post #58 of 173 (permalink) Old 02-06-2017, 05:44 PM
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Got LMM on the mind. LOL, didnt realize he had a LML....
Not everyone has an LMM.. but they should
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post #59 of 173 (permalink) Old 02-06-2017, 07:02 PM
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Originally Posted by R Shanta View Post
You can also use a feeler gauge with your current setup to ensure that your wheel/tire will fit. Make a cardboard, wood, metal or whatever you have laying around that is half the diameter of the difference of the current vs desired size. Turn the wheel and check for clearances. You should check both sides due to tolerance stack up and I my experience any thing with 1/2" may rub. If you do not have the clearance, jack up the truck in 1/2" increments and check again. Once you have the clearance between the tire and fender, checkout the clearance between the frame stop and UCA. Note the fender to ground distance. Then keep jacking the truck up until the UCA and frame stop distance no longer changes or you pick a tire up. If the droop distance is less than 2-3" the ride is going to be a bit harsh and it might be time for a lift or smaller tire.

For reference on my LMM summer wheels are 18x9 and 18mm offset running a 305/65/18. Tires rub slightly on the UCA.
Thanks. I was planning on checking fender clearance with the current set up at full turn, but this will also help with determining UCA and frame clearance. I can't really lift the front anymore so it's not nose high when hooked up to my 5th wheel. Worst case scenario, I go with stock tire size. This is what I'm looking at on stock wheels.

https://tiresize.com/comparison/


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post #60 of 173 (permalink) Old 02-08-2017, 08:15 PM
 
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My 2016 Denali doing what it does best[URL=http://s1369.photobucket.com/user/sgenna1/media/20160922_172257_zpsbmb3bgid.jpg.html
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