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  #16  
Old 08-01-2003, 01:37 PM
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CigarJohnny CigarJohnny is offline
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Quote:
Originally posted by mbtoloczko


You can also rent spring compressors from Schucks, aka Advance Auto, Checkers, etc. Usually is costs me about $6 to rent it for a few days.
Last time I was at a National Auto (I'm boy cotting my local store as he is an @SS!) they offer free tool rental to do the repair when you buy the parts from them. Not a bad deal.
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  #17  
Old 08-02-2003, 04:42 PM
SVXGIRL182 SVXGIRL182 is offline
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I got the strut from Subaru Parts.com. I just got a single strut and had it overnighted. The only problem is the guy who said he'd do it for me today, couldn't. So I won't have the strut intsalled until Monday now. My question is. Do you think its alright to put the new wheels on the back. And keep the old wheels on the front. I'm only going to drive it abou 5 miles total on monday to get the strut on and the alignment. Then I will put the new wheels on the front. I just want to put the wheels on now, to see what the look like. The new ones are 18's and the ones on the front are the oem 16's.
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  #18  
Old 08-02-2003, 04:55 PM
lee lee is offline
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wheel size isn't important, but rolling radius of the tire is VERY important.

here's how to set it up regardless of what a tire guy tells you:

set EITHER the front, or back, tires at the pressure you want. then adjust the air pressure in the tires at the other end so the distance from ground to the middle of the wheel is the same.

So in my car with 225X50X16 Fulda tires I have the back set at 30PSI. The I adjusted air pressure in the front until the distance measured at the middle was the same. Turned out I need 41PSI in front.

If you really wanted to be up-tight about it, you could chalk mark the tires and adjust pressure until they rolled the same number of revolutions (in a straight line of course).

The point of all this is to not put pressure on the AWD section from trying to drive wheel/tires of different rolling diameter - and that's all that matters, not width or wheel size, or even tire wear. The Subaru recommended tire pressures are for the OEM tires. The stiffness of another brand/type aftermarket tire might be enough to render their recommendation faulty (on my tire brand it IS).
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  #19  
Old 08-02-2003, 06:37 PM
SVXGIRL182 SVXGIRL182 is offline
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I got my car from the acura dealership, by Gilboy. They moved now to the auto mile. I was looking for a new car and saw it sitting there, I wasnt even going to stop about it b/c i thought it was going to be alot of money. I went car shopping all day then my boyfriend decided to call the dealer and find out how much it was. It was resonable, so I test drove it and loved it. I put a down payment on it and came back to the next day to get it.
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  #20  
Old 08-04-2003, 10:54 AM
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mbtoloczko mbtoloczko is offline
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Quote:
Originally posted by lee
wheel size isn't important, but rolling radius of the tire is VERY important.

here's how to set it up regardless of what a tire guy tells you:

set EITHER the front, or back, tires at the pressure you want. then adjust the air pressure in the tires at the other end so the distance from ground to the middle of the wheel is the same.

So in my car with 225X50X16 Fulda tires I have the back set at 30PSI. The I adjusted air pressure in the front until the distance measured at the middle was the same. Turned out I need 41PSI in front.

If you really wanted to be up-tight about it, you could chalk mark the tires and adjust pressure until they rolled the same number of revolutions (in a straight line of course).

....
I swear I'm not up-tight, but I did chalk the tires (white-out actually) and measure the revolutions with the front and rear tires at various pressures. What I found is that for identical tires in the front and rear, when the front and rear tires have the same loaded radius, the rolling circumference is different. The front will have a larger rolling circumference even though the loaded radius is the same as the rear, at least that's what I observed. I did the measurement several times to verify. I've got a posting on the network on the measurements. The best I could figure is that other factors such as toe and camber are playing a role.
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