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Old 11-01-2013, 07:50 PM   #1
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Tire size

Have 235/55/16 tires on my 02 rs as of right now. I have looked online at different sites for tires and have also called a few stores near by. Is it possible to go a size smaller or larger and not cause any problems. I'm talking about a size like 225/55/16 or 215/55/16 or 235/60/16.
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Old 11-01-2013, 09:03 PM   #2
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If you ant to change tire size without any problems, you want to find a tire that is as close as possible to your stock tire diameter.
235/55/16 = 26.2" overall diameter
225/55/16 = 25.7"
215/55/16 = 25.3"
235/60/16 = 27.1"
With the given tire sizes, the closest would be the 225/55/16, though that setup will result in your spedo being 1.7% too fast, and your odometer ill be a bit off as well. Use this site, it is very helpful :Tire size calculator
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Old 11-01-2013, 09:49 PM   #3
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Quote:
Originally Posted by redbird98 View Post
If you ant to change tire size without any problems, you want to find a tire that is as close as possible to your stock tire diameter.
235/55/16 = 26.2" overall diameter
225/55/16 = 25.7"
215/55/16 = 25.3"
235/60/16 = 27.1"
With the given tire sizes, the closest would be the 225/55/16, though that setup will result in your spedo being 1.7% too fast, and your odometer ill be a bit off as well. Use this site, it is very helpful :Tire size calculator
I have to disagreew ith their calculator
235/55.16
235 is tread width, 55 is height from rim to tread, 16 is rim size.
Any 55/16 tire is going to have the same ROLLING diameter regardless of tread width,
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Old 11-01-2013, 09:57 PM   #4
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No, the second number is the percentage of the width of the tire. So in a 235/55, the sidewall is 55% of 235mm.
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Old 11-01-2013, 09:59 PM   #5
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These are mine they are massive I have no problems with them though, next come around I might get them a little skinnier.
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Old 11-02-2013, 12:55 AM   #6
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Quote:
Originally Posted by NavyVet View Post

I have to disagreew ith their calculator
235/55.16
235 is tread width, 55 is height from rim to tread, 16 is rim size.
Any 55/16 tire is going to have the same ROLLING diameter regardless of tread width,
I was thinking the same thing and was just about to agree with you, but the more I thought about it; the height of the sidewall is a percentage of the tread width. Therefore the wider the tread width the taller the tire, if the two tires in question have the same percentage number and wheel diameter. There's got to be a simpler way to size tires.
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Old 11-02-2013, 01:14 AM   #7
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Originally Posted by 383 Stroker View Post
I was thinking the same thing and was just about to agree with you, but the more I thought about it; the height of the sidewall is a percentage of the tread width. Therefore the wider the tread width the taller the tire, if the two tires in question have the same percentage number and wheel diameter. There's got to be a simpler way to size tires.
There is an easier way but it's generally only found in off road tires for example 37x13.50
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Old 11-02-2013, 06:12 AM   #8
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Thanks for the input. The only reason I asked is brave I can only find three different kinds on tire rack for the 235/55/16. 225/55/16 there are a lot more choices.
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Old 11-02-2013, 07:54 AM   #9
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Originally Posted by 94 T/A View Post

There is an easier way but it's generally only found in off road tires for example 37x13.50
Now that, makes sense.
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Old 11-02-2013, 07:59 AM   #10
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Thanks for the input. The only reason I asked is brave I can only find three different kinds on tire rack for the 235/55/16. 225/55/16 there are a lot more choices.
I personally like the stock size. Obviously if you change the overall diameter/circumference of the tire your speedometer will be slightly off, but I'd be more concerned with installing a tire that's to big/wide and rubs when you turn sharp.
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Old 11-02-2013, 10:08 AM   #11
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Quote:
Originally Posted by 383 Stroker View Post
I was thinking the same thing and was just about to agree with you, but the more I thought about it; the height of the sidewall is a percentage of the tread width. Therefore the wider the tread width the taller the tire, if the two tires in question have the same percentage number and wheel diameter. There's got to be a simpler way to size tires.
I stand corrected.
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Old 11-03-2013, 12:14 AM   #12
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When you are dealing with 235/55/16 tires check date code. I found out the hard way and ended up with sidewall cracking and later found the tires to be a year older then my 97 and this happened in 2007. Tires only lasted 2 years and had issues that felt like belt separation (car lost it's nice steering feel at highway speed and had mind of it's own)

If you can go to a 245/50/16 after I did that car drove much better and never had issues again.
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Old 11-03-2013, 07:56 AM   #13
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Good point. These size tires are not as common on vehicles and end up sitting on the shelf and aging in the tire shops.
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