18" tire package
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i just want to go with another tire because i know the potenza sucks *** for tread life.
It seems the bf goodriches have almost 3x the tread life.
I'm not a crazy driver, so I think they will be fine.
I can't imagine affording new tires every year, especially with these being $200 per tire.
It seems the bf goodriches have almost 3x the tread life.
I'm not a crazy driver, so I think they will be fine.
I can't imagine affording new tires every year, especially with these being $200 per tire.
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Originally Posted by shawnost
I was actually thinking of getting 235/50/18's up front and 245/45/18's in the rear when it is time to change out my OEM's (either from wear or for next winter) as it doesn't really get too cold around here but there is the occasional dip below freezing. There are quite a few sets of HPAS tires available in these sizes. The 225/50/18 front OEM size is the really problematic one as the rear size does have quite a few options open. The speedo offset for the fronts is 1.5%, anyone know if this approach is good/bad? 
In comparing 225/50 and 235/50 the sidewall height will change, therefore the overall diameter will change as well, in this case it is 26.7" and 27.3" respectively. Here is a handy tool for calculating this:
http://www.miata.net/garage/tirecalc.html
In comparing 225/50 and 235/50 the sidewall height will change, therefore the overall diameter will change as well, in this case it is 26.7" and 27.3" respectively. Here is a handy tool for calculating this:
http://www.miata.net/garage/tirecalc.html
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Originally Posted by shawnost
I was actually thinking of getting 235/50/18's up front and 245/45/18's in the rear when it is time to change out my OEM's (either from wear or for next winter) as it doesn't really get too cold around here but there is the occasional dip below freezing. There are quite a few sets of HPAS tires available in these sizes. The 225/50/18 front OEM size is the really problematic one as the rear size does have quite a few options open. The speedo offset for the fronts is 1.5%, anyone know if this approach is good/bad?
In comparing 225/50 and 235/50 the sidewall height will change, therefore the overall diameter will change as well, in this case it is 26.7" and 27.3" respectively. Here is a handy tool for calculating this:
http://www.miata.net/garage/tirecalc.html
In comparing 225/50 and 235/50 the sidewall height will change, therefore the overall diameter will change as well, in this case it is 26.7" and 27.3" respectively. Here is a handy tool for calculating this:
http://www.miata.net/garage/tirecalc.html
You are exactly right, the 225/50/18s in the front are the killer size. Many options available in 235/50/18, and then you can stick with 245's in rear or even bump up to 255's I think.
Originally Posted by dataro
ah so if the tire is too smal for the wheel then it will get stretched width wise and the diameter will be smaller. Kewl Thanks for the correction.
http://www.tirerack.com/tires/tirete....jsp?techid=46
The tires themselves do not stretch or shrink with width...that wouldn't work out to well for the car driving on them...
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Originally Posted by nrken99
Anybody know why the tires are different front & back? Dealer said it was just aesthetic - looks sportier - but that seems an odd reason to make rotation impossible.
Is the dealer THAT clueless about handling/understeer/oversteer?
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From: Massachusettes
This was very helpful. I did not realize that the 235 tire ideal partner is a 7.5 inch room. I was concerned about turniin and muffin top with the tires. I moved north so I need a winter worthy tire (rear-wheel drive, deep snow = STUCK!) I also had some concern about the change in tire diameter. After giving it some thought, and alot of research, I rather be .5in too big with the 235-50 than .5in too small with the 235-45.
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