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Old 08-13-2005, 11:22 PM   #1
WRX06
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Member#: 41518
Join Date: Aug 2003
Chapter/Region: Tri-State
Location: Philadelphia/ Wake Forest U
Vehicle:
06 A4
Black

Default Tire size for 18s

I'm going to be ordering Volk GT-V's on monday, 18X8 with a +46 offset. The next step in the ordering process is obviously going to be tires, and i cant decide whether i want a 235/40/18 or 225. I understand the 225 will be closer to the stock ratio, but im also thinking that maybe the extra difference in sidewall height will help me out in terms of potholes and ride. Opinions?
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Old 08-14-2005, 04:29 AM   #2
ripvw
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Quote:
Originally Posted by WRX06
I'm going to be ordering Volk GT-V's on monday, 18X8 with a +46 offset.
ET46? hope you have a sedan - with a wagon you would need fender rolling for sure...

Quote:
Originally Posted by WRX06
...I understand the 225 will be closer to the stock ratio
yes, and unfortunately the 235 gives you a 1.3% gearing disadvantage - may notice that in low speed acceleration unless you've already done some engine mods

http://www.miata.net/garage/tirecalc.html

Quote:
Originally Posted by WRX06
...but im also thinking that maybe the extra difference in sidewall height will help me out in terms of potholes and ride. Opinions?
with the 235 you gain .2" in sidewall height, get a gearing disadvantage & screw up your speedometer a little bit. any weight differences in the sizes for your specific tire worth mentioning? overall, I think I'd stick with the 225...
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Old 08-14-2005, 02:48 PM   #3
WRX06
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yes, i have a sedan. what does gearing disadvantage mean? I understand all of what you said but that part, please explain if you have the time
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Old 08-14-2005, 03:39 PM   #4
wrx2
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2002 WRX vf22 SOLD
Now E46 M3 Vert

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The overall diameter of 235's is larger than 225's so you would get less acceleration with 235's. The RPM goes faster with smaller diameter tires.

I have a 18x8 Rays Gramlights 57pros with 225 Azenis. Since you are in the Philly, you can check out my car before you order them.
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