Largest 15" tire size for stock wheels/height? - Scion xB Forum
Scion xB Wheels & Tires In a culture where it's all about the kicks, your Scion xB shouldn't be left behind. Discuss with your fellow forum members what set of wheels and tires look best on your Scion xB, maybe even share where to find some great deals for Scion xB wheel and tire packages.

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post #1 of 6 Old 12-11-2017, 10:48 AM Thread Starter
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Largest 15" tire size for stock wheels/height?

Just like the title says, I'm looking at options for the stock 15" wheels and stock height.

What's the biggest I can fit in there with ZERO rubbing?

I currently have 195/60's with zero issues, but they do look kinda tiny and the speedo seems to be off according to my GPS (speedo reads about ~5mph higher than GPS)

Wouldn't mind getting a bit more rubber in there if I can.
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post #2 of 6 Old 12-11-2017, 01:00 PM
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Re: Largest 15" tire size for stock wheels/height?

The speedo will read around that much higher than GPS with the factory stock 185/65% tyres. Speedometers and odometers are designed to be between 5 and 8% over reading as it's not illegal to drive slower than the limit and if the speedo read true midway through the life of the tyre, then it would be illegally underreading with new treads on.

Use the link that gives you the actual circumference, put in the tread sectional width that you want, and it will compare to the circumference of the stock 185/65% or whatever you enter in the box at the left of the page. I'm after posting that in two separate threads recently, here it is again:

Click on the link, this is the 4th page on Chromium, Safari may have a different layout as the site is compiled like a forum, then scroll down while you see the comparison chart. One thing though but: You need to use a figure of >/</=96% of the ROLLING circumference to get the same static figure, this can also be calculated from the static laden radius, so don't worry when it seems to be a little out when you click on the calculate button below the chart:

Car Bibles : The Wheel and Tyre Bible
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post #3 of 6 Old 12-14-2017, 03:37 PM
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Re: Largest 15" tire size for stock wheels/height?

I ran 225/50-15’s on my last xb...just picked up another & will likely do the same.
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post #4 of 6 Old 05-28-2018, 08:52 PM Thread Starter
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Re: Largest 15" tire size for stock wheels/height?

So this happened earlier today:




Now I'm debating between 195/65/15 or 205/60/15
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post #5 of 6 Old 05-30-2018, 08:37 PM Thread Starter
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Re: Largest 15" tire size for stock wheels/height?

OK, went with the 205/60's


Pretty big difference compared to my old 195/60's










No rubbing, super smooth and the speedo matches my GPS perfectly now
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post #6 of 6 Old 05-15-2019, 12:41 AM
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Re: Largest 15" tire size for stock wheels/height?

For some reason i couldn't post a new thread, so decided to ask here since it's a similar question.
I wanted to get these Enkei Compe wheels and wanted to ask which size could i possibly get?
https://revwerkswheels.com/product/enkei-compe-wheels/

15x7 or 15x8 or maybe 16x7, 16x8? and what offset? And the what are the biggest tires i can put on for those sizes?
Thanks a lot for answers

scion xb 2006 release 4.0
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