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Old 12-15-2002, 04:59 PM   #1
Rexkid
Scooby Newbie
 
Member#: 13487
Join Date: Dec 2001
Location: berkeley
Vehicle:
2002 WRB Wagon
OZ P1's, Vishnu 0

Default 48mm offset vs. 53mm offset

I have done all the searches but am still left with the question as to what is really the difference between the two offsets in terms of fitment. I realize there is a 5mm difference. But how come shops such as tirerack.com reccommend the exact same tire size??? I would think that the same tiresize would have a higher tendency to rub on the +48s.

Anyone?

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Old 12-15-2002, 06:16 PM   #2
Frederf
Scooby Specialist
 
Member#: 15622
Join Date: Feb 2002
Location: Campbell, CA
Vehicle:
2002 WRX SW
WRB

Default

Offset has nothing to do with how the wheel and tire fit together. Until you put the wheel/tire on the car offset is not a factor at all. JUST REREAD YOUR POST: The wheel -> tire size calculator always comes up with the same suggestion regardless of the specific vehicle. It's not smart enough to say, "Hey, use a 215 and not a 225 so you won't rub on a WRX!"

Offset is the distance from the center of the wheel (width wise) to the plane at which the wheel bolts up to the car. A big offset would have a very deep concave backside.

High offsets will get the wheel and tire toward the center of the car and out from under the fender. But they, bringing the wheel/tire inward, bring it closer to rubbing on the inside.


The proper tire depends on 1. wheel diameter, 2. wheel width, 3. offset, 4. sedan/wagon

I for example am planning to put STi7 wheels on my wagon. Since that's a ET53mm 7.5" wide wheel on a wagon, I'll probably have to run the least obtrusive tire possible.

It all comes down to "it depends." List your setup and with those specifics someone can tell you what the right tire is.
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