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Biggest tire on the factory 17" Steelies

IdahoGrenadier2024

Grenadier Owner
Local time
10:54 PM
Joined
Sep 4, 2024
Messages
6
Location
Sun Valley, ID, USA
Hello Eveyrone,

If I want to increase the tire size but keep the factory 17" steel wheels, what is the maximum tire size that I can go to?

Kindly advise. Thank you. Mark
 

😉
 
So the stock tire is a LT265/70 R17 which puts it at 31.61" overall diameter and a width of 10.43"

If I go to a 285/70 R17 that would put the overall diameter at 32.71" and a width of 11.22"
If I go to a 285/75 R17 that would put the overall diameter at 33.83" and a width of 11.22"

For you wheels & tire guys out there, would both size upgrades fit without rubbing or the need for any suspension modifications?

Thanks for the forum help, nice to have a place to ask. Mark
 

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For you wheels & tire guys out there, would both size upgrades fit without rubbing or the need for any suspension modifications?
Both of those options fit without any lift
 
The tallest I've see claimed by Dirtbox Overland (look them up on youtube) is a kenda 35x10.5. next was a MT 255/85r17. Cant vouch, I havn't seen 'em in person.
 
You can also go with a Mickey Thomson Baja Boss 255/85r17. They measure 34.6" tall which is actually slightly taller than most "35 inch" tires. Sectional width at street pressure is 9.8 inches but when aired down for off road use it has the same contact area as the typical 35x12.50r17 tire. The 255/85 tire does not rub even at full steering lock and full articulation and can be run on the stock suspension without a lift. It is the tire that I am currently running and I love it.

Edit: I forgot to mention that this tire does not clear the door without using the Leitner spare tire relocation bracket. $200 and a Super easy install.


IMG_2142.jpg
 
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You can also go with a Mickey Thomson Baja Boss 255/85r17. They measure 34.6" tall which is actually slightly taller than most "35 inch" tires. Sectional width at street pressure is 9.8 inches but when aired down for off road use it has the same contact area as the typical 35x12.50r17 tire. The 255/85 tire does not rub even at full steering lock and full articulation and can be run on the stock suspension without a lift. It is the tire that I am currently running and I love it.

Edit: I forgot to mention that this tire does not clear the door without using the Leitner spare tire relocation bracket. $200 and a Super easy install.


View attachment 7874362
Thanks for the recommendation. Would it be possible for you to please post a picture of what your spare looks like from behind the vehicle as mounted on the Leitner relocation bracket? I just want to make sure it doesn’t completely dominate the back end of the vehicle aesthetically wise. In addition, I have the 17 inch alloy wheels, would that make any difference as compared to the steelies ? Thank you very much.
 
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Thanks for the recommendation. Would it be possible for you to please post a picture of what your spare looks like from behind the vehicle as mounted on the Leitner relocation bracket? I just want to make sure it doesn’t completely dominate the back end of the vehicle aesthetically wise. Thank you very much.
9B73C523-C944-4B58-ADF9-3EAEF4E67B79.jpeg


You can see that the tire is moved to the right and up. Lot’s of door clearance now and the reverse camera is blocked by the spare tire as much.

DA0C9131-FB2F-418B-A7B5-6886DBCF2AD1.jpeg


It was a boys trip for a good friend’s 60th birthday. The doll was mild compared to the rest of the week.
 
Thanks for the recommendation. Would it be possible for you to please post a picture of what your spare looks like from behind the vehicle as mounted on the Leitner relocation bracket? I just want to make sure it doesn’t completely dominate the back end of the vehicle aesthetically wise. In addition, I have the 17 inch alloy wheels, would that make any difference as compared to the steelies ? Thank you very much.
I run the 255/85 MT Baja Boss on my Grenadier on the stock steelies and do not use the Leitner bracket. I simply installed 3/8" worth of spacers under the top left stud holding the wheel to the OEM tire carrier and 3/16" of spacers under the lower stud. This allows the tire to easily clear the smaller door when opened. Yes the rear camera is blocked more by the larger tire but it is still usable.
 
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