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Discussion Starter #1
I have an opportunity to buy a nice set of 17 inch VW wheels and tires from a 2005 Passat. I would like to put them on my 99 Wagon. The tires are 215/50/17's. I was expecting that they would have been 224/45/17's....Will there be any problems with running this size on the Passat even though it is not an equivalent size.
 

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I run 225/45/17s on my RH 17x8s and they look like this:



If the VW 17s are 17x7.5s, then 215/50/17s will have the same profile, but be a half inch narrower. I don't think VW ever made a wheel that was 17x8. My 16x7 OE Vancouvers have 205/55/16s on them. The circumference differences between the 205/55/16s, 215/50/17s and 225/45/17s are negligible.

circ = ((16 x 25.4)+((205 x .55)x 2)) x ∏ = (406.4+225.5) x ∏ = 1985.172
circ = ((17 x 25.4)+((215 x .50)x 2)) x ∏ = (431.8+215) x ∏ = 2031.98
circ = ((17 x 25.4)+((225 x .45) x 2)) x ∏ = (431.8+202.5) x ∏ = 1992.71

No real size problems to speak of. But you also have to account for center line offset for things like brake caliper and control arm clearances. The B5 and B5.5 are setup for a ~35mm offset or ET. Do you know the offset of the wheels you are interested in?

:wrench:
 

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225/45/17 is the best match to meet oem specs. 215/50/17 shouldn't be an issue to run from a mechanical perspective. the only real affects you'll get is to your speedo readings, which may be a few mph off from oem spec.

the oem spec tends to give you a higher mph reading than you're really going (typically 2-3mph). running a lower profile tire will likely put your speedo readings a little faster, hence you might be off by a full 5mph between your actual speed and what the speedo shows (speedo shows 55 but you're actually doing 50).

a tire bigger than 225/45/17 would have a converse affect, making your speedo read a few mph slower and likely eliminating the 2-3mph difference inherent to the oem specs.

here's a good calculator to see how tire size will affect the speedo readings. 215/50/17 will read slightly slower than 225/45/17, so you'll likely just be eliminating the slightly higher readings of the oem specs.

in other words... you're good. the size won't harm your car and your speedo readings will be closer to your actual rate of speed.
 

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Discussion Starter #4
I ended up buying the wheels and tires. I got them for $275 and the wheels are very nice. Thanks everyone for the help. Here are the wheels on my 99 B5 wagon that I picked up earlier this week.
photo-2.jpg
 

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I just put a set of 225/50-17s on on A4 wheels on my 2000 Passat replacing 195/65-15s. They fit (barely) but boy do these Continentals ride better than the Hankooks that were on it. Quieter, more stable, more responsive. I’m hoping they’ll be a lot better in wet too.

I have to thank this and other posts that gave me the confidence they would work. I’ll post pics as soon as I get the car cleaned up.
 
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