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post #1 of 23 (permalink) Old 05-03-2019, 02:50 PM Thread Starter
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Mininimum wheel diameter?

Hello.

I just bought an XLE Premium with the 19x7.5 wheels, coming from a 3rd gen 4Runner. My wife has a 2016 TRD Pro 4Runner. I am considering going down in size to get a little more rubber between me and the surface.

Does anyone know if 16s will fit over the calipers? Perhaps even 15s?

Thanks!
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post #2 of 23 (permalink) Old 05-03-2019, 03:46 PM
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These 16"s fit this Adventure, so they should fit the XLE-P fine, might depend on the wheel too tho.

https://www.rav4world.com/forums/197...ml#post2670965

2019 XLE Premium AWD
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post #3 of 23 (permalink) Old 05-03-2019, 04:11 PM
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Yes "Back Spacing" plays into the mix too. Finding the minimum OE wheel may be the only sure method.

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post #4 of 23 (permalink) Old 05-03-2019, 04:42 PM Thread Starter
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Thanks! Yeah, that is a start!

I'd probably go with a 7" wide wheel regardless, for the reduced weight, increased rash protection, and increased bead retention if I ever run lower pressures (I won't be doing anything crazy, but the other two benefits still stand). I would likely stick with a similar offset to factory (slightly reduced backspacing if the wheels are narrower), paying attention to balance the turning arc and inner-tire clearance.

My factory tires are 29.2", so Id probably go with something in the 29.5-30" range.
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post #5 of 23 (permalink) Old 05-03-2019, 04:49 PM
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Post a picture when all is done, if you want. I too prefer more rubber.


Quote:
Originally Posted by Lindenwood View Post
Thanks! Yeah, that is a start!

I'd probably go with a 7" wide wheel regardless, for the reduced weight, increased rash protection, and increased bead retention if I ever run lower pressures (I won't be doing anything crazy, but the other two benefits still stand). I would likely stick with a similar offset to factory (slightly reduced backspacing if the wheels are narrower), paying attention to balance the turning arc and inner-tire clearance.

My factory tires are 29.2", so Id probably go with something in the 29.5-30" range.
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post #6 of 23 (permalink) Old 05-03-2019, 09:33 PM Thread Starter
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I turned the wheels to full-lock and felt around as best I could. I think a 30.6" tire (what most call 31s) would fit, at least for everyday driving. I will have to stuff the tires to see if they get much closer to the fenders when articulating.

How do you guys host photos?
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post #7 of 23 (permalink) Old 05-04-2019, 07:20 AM Thread Starter
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Quote:
Originally Posted by Lindenwood View Post
I turned the wheels to full-lock and felt around as best I could. I think a 30.6" tire (what most call 31s) would fit, at least for everyday driving. I will have to stuff the tires to see if they get much closer to the fenders when articulating.

How do you guys host photos?
To clarify, the closest any portion of the tires was to the wheel wells or suspension (I couldn't tell if it was the anti-sway bar or the tie-rod end), with the vehicle on level ground, was maybe 1.5". 30.6" tires would only thus reduce that distance by about 0.7", to maybe as much as 1" considering the additional width. Thus, again for daily driving I think you'd be fine with 30.6s. I'll post back when I get a chance to stuff one of the tires.
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post #8 of 23 (permalink) Old 05-04-2019, 02:18 PM Thread Starter
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Quote:
Originally Posted by Lindenwood View Post
To clarify, the closest any portion of the tires was to the wheel wells or suspension (I couldn't tell if it was the anti-sway bar or the tie-rod end), with the vehicle on level ground, was maybe 1.5". 30.6" tires would only thus reduce that distance by about 0.7", to maybe as much as 1" considering the additional width. Thus, again for daily driving I think you'd be fine with 30.6s. I'll post back when I get a chance to stuff one of the tires.
Looks like stuffing the tires with the steering wheel turned narrows narrows the gap to about .6 or .7" between the inner edge of the tire and the back of the fender.

Thus, I think a ~30" tire is about the most you could fit for a vehicle that is often articulated, and that would require a near-stock offset. You could probably do a 30.6" tire on a street-only vehicle. This assumes no trimming, but you could likely easily get 31" or more under there by trimming some plastic lining and / or hammering of the inside of the wheel wells.

Also, of note, it looks like 15s would definitely interfere with the portion of the strut mount that's inside the rim, and may also hit the calipers. It is possible you could grind these bits down to fit to get the most rubber under the vehicle, but I am not sure that would be worth it.

*edit*

Also, here is a good link that helps depict relative tire sizes and offsets, and provides good numbers as well.

https://tiresize.com/wheel-offset-calculator/
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post #9 of 23 (permalink) Old 05-04-2019, 03:55 PM
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Quote:
Originally Posted by Lindenwood View Post
Also, here is a good link that helps depict relative tire sizes and offsets, and provides good numbers as well.

https://tiresize.com/wheel-offset-calculator/
I like to use this site for side-by-side comparisons. \/ \/ \/


Custom rims, wheel tire packages

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post #10 of 23 (permalink) Old 05-05-2019, 03:04 PM
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16" works fine. Wrapped in 255/70r16 Falken wildpeaks


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