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Bigger wheels onto 93 legacy?


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I put a set of WRX wheels on my 93 Legacy and it dramatically improved the handling. They are 16 X 7. Got them from Ebay for $325 a year ago. As a bonus, they came with new tires directly off a new WRX. Yes, the bolt pattern is 5 X 100mm. Another benefit of getting a set of WRX wheels is that the offset is correct for Subaru's. Also, like GLCraigGT said, the slightly larger rubber corrected my speedometer which was wrong with the stock tires. Here's a picture. Sorry it's not closer, but it will give you the general idea:

 

24-house-from-lower-terrace.jpg

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How do I change the offset if its incorrect?
You can't, it's built into how the wheel is made. The only way to get it right is to buy it right.

 

Here's a link that explains offset and shows simple diagrams:

http://www.etddiscounttire.com/wheeloffset.html

 

Note that there is both negative and positive offset. The Subaru offset is from 48 -55 POSITIVE offset, depending on the wheel and tire combination. Staying closer to 50 -52 is probably optimum.

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Okay, Thanks for anweriung all my questions, I have one more...

 

What if the wheel is close to the correct offset, but not exactly?

 

I guess what I mean is what if it's a 40mm positive offset?

 

The reason is I've found a good deal on some wheels (obviously :brow: ). Anyway, I just want to make sure that it's alright to put them on my car.

 

With the offset being 40 and not 50, what will happen? Anything MAJOR? On that link the only thing it said that concerned me was the load bearing thing. The rest seems to be more minor things.

 

Any help is greatly appreciated, I need to know by 3:30 today if possible!

 

 

Thanks again,

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With the offset being 40 and not 50, what will happen? Anything MAJOR? On that link the only thing it said that concerned me was the load bearing thing. The rest seems to be more minor things.

 

Any help is greatly appreciated, I need to know by 3:30 today if possible!

Darn, I'm sorry I missed your 3:30 deadline today. The offset is measured in millimeters, so the difference between 50mm and 40mm is 1 centimeter which is about 4-tenths of an inch. It doesn't sound like much, but that might just be enough to make a tire rub the top of your shock tower. I know that with the WRX wheels and tires on my 93 Legacy, I can't even get my finger between the tire and the top of the shock tower.

 

If you already purchased the 40 offset wheels, I hope they work out for you. If you have not purchased them yet, maybe you could get the dealer (or individual) to give you a 72-hour return clause in case they don't work.

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Touching the strut tower will be less likely with 40mm than 50mm. The higher the number, the further in the wheel will move. So, a 40mm offset is likely to cause rubbing on the fender.

 

Offset is more important than many people - including wheel shops - realise. A 40mm offset will cause a different load on the hub-bearing, and will interfere with your steering and suspension geometry.

 

The car won't swerve off the road or anything drastic, with a 10mm difference, but if you are seeking better handling with the new rims, you need a 50-55mm offset.

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