18" wheels and T/A KO2 Fit - Ram Promaster Forum
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post #1 of 5 Old 03-19-2019, 06:40 PM Thread Starter
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Lightbulb 18" wheels and T/A KO2 Fit


I'm going to need new tires soon, which has me thinking of some options. Sounds like most people are successful with fitting the larger 245/75/R16 on their Promasters. Instead of going that route, I'm thinking about 18" wheels while I'm at it. I've had good luck with BFgoodrich T/A KO2, and they make that tire in a 265/60/R18 which is the same diameter as a 245/75/R16. So, I'm hoping the 18" tire will not have clearance issues with the diameter. However, the 265/60/R18 is obviously wider... 0.8" to be exact. The offroad 5x130 18" wheels that I'm looking at are +48mm offset instead of the stock massive +68mm offset. This pushes the tire 1.2" farther out. With my eyes and some rough measurements, it looks like it could fit. Maybe some trimming/massaging of the wheel well/trim.

I have a pair of 40mm spacers that are ready to go above the struts to give the front end a bit of a lift and hopefully more clearance.

Has anybody gone down this road before? Any thoughts?
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post #2 of 5 Old 03-20-2019, 02:30 PM
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A 60's series tire wheel combo will result in a harsher ride. Just something to think about.

2017, High Top/159 WB, 2500 gas Promaster
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post #3 of 5 Old 03-21-2019, 06:28 AM
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I agree with Mtbiker, you will be compromising comfort for looks.

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post #4 of 5 Old 03-21-2019, 08:19 AM
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You said your eyes show it could fit, is that on a 245/75R16? I would also want to turn the 245's in the wheel well to see if the 1.2" further out does not project into the tubs. I think they would look better than the 225's but the offset is what is really giving you the "look" imo.

I am going with 245/70R16 when my stock tires wear out. It is very close to the stock diameter so no speedo or MPG or gear ratio issues but It should be a bit better on forest roads / back roads.

Also, will the new offset create any steering pulling when it accelerates on a curve?
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post #5 of 5 Old 04-01-2019, 10:47 AM
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Please post about your progress on this! I've got a set of 245/70/17's that I'm planning to mount up on my van as we get into summer. I've also got the russian 40mm spacers that I plan to install as well. I'm really on the fence about attempting to install the spacers myself, so interested to hear how it goes for others.

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