Changing to wider tires.. need advice
09-23-2003, 01:24 PM
#1
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Changing to wider tires.. need advice
Question:
What is the maximum tire size My RX-8 MT's 18" rims can handle before I start running into problems (such as rubbing, etc)..
anyway, if there is anyone out there with knowledge in this area, please elaborate on this... How far can you go in terms of only changing the tire, on a typical wheel...
I'm looking to increase the width of the tire, mainly for visual kicks.. something like 235/40 or 45's would be great...
What is the maximum tire size My RX-8 MT's 18" rims can handle before I start running into problems (such as rubbing, etc)..
anyway, if there is anyone out there with knowledge in this area, please elaborate on this... How far can you go in terms of only changing the tire, on a typical wheel...
I'm looking to increase the width of the tire, mainly for visual kicks.. something like 235/40 or 45's would be great...
09-23-2003, 08:58 PM
#3
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Take a look at this thread:
http://www.rx8forum.com/showthread.p...threadid=11421
http://www.rx8forum.com/showthread.p...threadid=11421
09-23-2003, 09:36 PM
#4
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Wakeesh, I mean the width of the tire, primarily.
I don't want to replace my rims, just want to add new thicker tires.. How wide can the the the current OEM 18's take?
235 is okay Ithink, how about 265? 300??
I don't want to replace my rims, just want to add new thicker tires.. How wide can the the the current OEM 18's take?
235 is okay Ithink, how about 265? 300??
09-23-2003, 10:28 PM
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The stock 18's are 18x8, so a 245/40/18 will fit on there no problem, but it's like a 1% difference on the speedo conversion. Also that size has a LOT more options than the stock 225/45/18.
I just ordered better tires for the stock rims, so I just went through all the research.
I just ordered better tires for the stock rims, so I just went through all the research.
09-24-2003, 03:50 AM
#8
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Re: Changing to wider tires.. need advice
ah ha... so you did mean width... what really threw me was this:
...which lead me to believe you wanted vertically wider tyres 
Originally posted by Squidward
something like 235/40 or 45's would be great...
something like 235/40 or 45's would be great...
09-24-2003, 02:14 PM
#11
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I how about Potenza RE040's that are
255/45/18
I looked on the Bridgestone website to find out the allowable minimum rim width is 8 inches.
so it should be okay right???
are there any potential problems here?
255/45/18
I looked on the Bridgestone website to find out the allowable minimum rim width is 8 inches.
so it should be okay right???
are there any potential problems here?
09-25-2003, 02:35 PM
#12
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This might help you out...you can figure out how much of a change in the overall diameter different tire and wheel sizes could have. This is important in order to keep the speedometer accurate...
http://www.miata.net/garage/tirecalc.html
- Matt
http://www.miata.net/garage/tirecalc.html
- Matt
09-25-2003, 09:08 PM
#13
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Or if accurate speedos' are your requirement AND you want to change the diameter, this might work on the 8:
http://www.blackrobotics.com/
Works on other cars, and I have one on my geared 03 R6
http://www.blackrobotics.com/
Works on other cars, and I have one on my geared 03 R6
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