staying with stock wheels
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New User
Joined: May 2018
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staying with stock wheels
Thank you in advance for your help! I like the look of stock wheels and want to stay with them. That said I am looking to upgrade tires. wanting to go to 35x12.5x18 and need to know if these will fit with the 275x70x18 stock rims that the 17' came with? I am having alot of trouble figuring this out. will these fit on the stock rims?
Fleet Mechanic
Joined: Dec 2012
Posts: 1,304
Likes: 93
Thank you in advance for your help! I like the look of stock wheels and want to stay with them. That said I am looking to upgrade tires. wanting to go to 35x12.5x18 and need to know if these will fit with the 275x70x18 stock rims that the 17' came with? I am having alot of trouble figuring this out. will these fit on the stock rims?
Hotshot
Joined: Apr 2013
Posts: 10,121
Likes: 652
From: NH
I ran 35x12.5x18 on my stock rims. As Truckie 256 said, some tire shops will refuse because most manufacturers of tires that size say you need a minimum rim width of 8.5". Nevertheless, I found a good tire shop which would do so, and I had zero issues running BFG KO2 tires which were awesome.
Logistics Pro
Joined: Apr 2017
Posts: 3,674
Likes: 51
From: SoCal
99% of the 12.50 wide tires will state a minimum 8.5" width rim. So big box stores like Discount Tire, Costco, etc. won't mount them. Any good small shop will do it, and you wont have any issues missing that 0.5" of width.
Junior User
Joined: Jul 2018
Posts: 53
Likes: 6
Tomorrow I am planning on mounting 35x12.5x18 BFG KO2s on my stock 18x8 wheels. Hopefully I will not have an issue with getting them mounted. If so I'll have to find another shop.
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Laughing Gas
Joined: Jun 2018
Posts: 939
Likes: 8
From: DFW
If you are about performance and drivability then forget the factory rims with that size unless you are running a "mall crawler". They are too narrow to run that size properly however, they will look cool until you look closely and see where your tire is not making close to full contact with the road.
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Fleet Mechanic
Joined: Apr 2018
Posts: 1,502
Likes: 165
If you are about performance and drivability then forget the factory rims with that size unless you are running a "mall crawler". They are too narrow to run that size properly however, they will look cool until you look closely and see where your tire is not making close to full contact with the road.
dont put 13.5’s on an 8” wheel. Consider an 11.5” if you can find it in the diameter you want over a 12.5”.... and use common sense when driving something with oversized tires, even if you decide to get a bigger wheel.
Laughing Gas
Joined: Jun 2018
Posts: 939
Likes: 8
From: DFW
Ok if you say so.. Go ahead mount them then on your drive way I use water then drive through it slowly look at the contact patch. You will be shocked. Been doing this stuff for 40 years. You may think it is performing brilliantly but in fact -- not really.... Also the tire will not flex normally during normal driving due to the out of design spec sidewall of the carcus flex.
More Turbo
Joined: Oct 2017
Posts: 741
Likes: 234
From: S. Indiana
Ok if you say so.. Go ahead mount them then on your drive way I use water then drive through it slowly look at the contact patch. You will be shocked. Been doing this stuff for 40 years. You may think it is performing brilliantly but in fact -- not really.... Also the tire will not flex normally during normal driving due to the out of design spec sidewall of the carcus flex.
Laughing Gas
Joined: Jun 2018
Posts: 939
Likes: 8
From: DFW
With all due respect for your 40 years of "doing this stuff", but these are 6000 lb plus trucks where performance and driveability are highly subjective, even among members that have the same "exact" tires......tire sizes, tread patterns, side wall flex, inflation pressures, etc etc are discussed frequently and there is no shortage of "opinions" on the subject. The consensus here seems to be a big box store won't likely mount them, but, the OP will be fine with his 8" rims - I agree.
Performance and looking good do not necessarily go hand in hand. Cannot tell you how many morons I have run across who run tires that rub when they pull into a parking lot just as an example lol. In the end it is your throat your razor and you are accountable for it..
Fleet Mechanic
Joined: Apr 2018
Posts: 1,502
Likes: 165
^^^^^* Not an expert, but I did stay at a holiday inn express last night!
I know not much about tire engineering. I’ve spent some time around engineers determining what tolerances to put in documentation. Let’s just say Rock Paper Scissors could be involved in the last significant digit.
I know not much about tire engineering. I’ve spent some time around engineers determining what tolerances to put in documentation. Let’s just say Rock Paper Scissors could be involved in the last significant digit.
Senior User
Joined: Jan 2017
Posts: 183
Likes: 0
You know, I just don't get it. This is supposed to be a forum where people share ideas and opinions. No one, and I mean no one should be shamed, blasted, flamed or belittled for their ideas or opinions. We are all here to help each other. I for one really appreciate the honest information presented here. You don't have to agree with "fact" if you don't want to. Nevertheless, it is fact and you can't change truth just because you disagree. I am going through the same dilemma, whether to mount oversize tires on stock rims. I value the the facts even if I decide to go against them. But to bash a guy for posting the truth just because you don't agree with it, or have a different opinion, is against everything this forum is about and I'll say something whenever I see this kind of behavior. Let's keep it friendly and helpful please.