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Old 08-28-2006, 08:01 PM   #1
spdracr00
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Join Date: Jul 2004
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Location: Hillsboro, OR
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1996 Impreza L
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Default 14" silverstones vs 15" silverstones

Ok, so on my new rallycross car (92 legacy sedan) its got 14" wheels. I have a set of 15's with some well used silverstones on them now. so i'm wondering if I get a 2nd set should i get more 15's or would 14's work just fine...
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Old 08-28-2006, 08:09 PM   #2
greg donovan
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Originally Posted by spdracr00 View Post
Ok, so on my new rallycross car (92 legacy sedan) its got 14" wheels. I have a set of 15's with some well used silverstones on them now. so i'm wondering if I get a 2nd set should i get more 15's or would 14's work just fine...

it is easier to obtain used 15" rally tires, but new 14" rally tires are a bit cheaper.

however, the shorter tire will give you better gearing for rallyx. i say get a set of used 14" rally tires and do some testing and pick the one you like the best.

i use 14" kuhmo r700s on my FWD rallyx legacy sedan and we are pretty pleased w/its performance.
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Old 08-28-2006, 08:17 PM   #3
spdracr00
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I never though about the gearing.. interesting. looks like i'm dropping the tabors a line about 14's. did you have any issues with rolling a bead or sidewall damage?
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Old 08-28-2006, 08:23 PM   #4
greg donovan
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I never though about the gearing.. interesting. looks like i'm dropping the tabors a line about 14's. did you have any issues with rolling a bead or sidewall damage?
nope.

i have run 14 kuhmos and michelines at events where people were rolling all season beads and never had a problem.

i run about 30-30 pounds in the tires.

i hammer on the car pretty hard into hairpins. we have a practice course at my parents farm w/a left right chicane into a left hand hairpin that we would hit pretty fast (about 40) and have never rolled a bead (knock on wood). it forces you to use a "scandinavian flick" into the hairpin so you can do awesome drifts around the hiarpin. but we dont have any rocks there but it does rut up a bit.
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Old 08-28-2006, 08:34 PM   #5
spdracr00
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are you running stock brakes up front? also do you happen to know what the biggest brakes you can stuff under some 14's.
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Old 08-28-2006, 08:41 PM   #6
greg donovan
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are you running stock brakes up front? also do you happen to know what the biggest brakes you can stuff under some 14's.
stock brakes w/some of the delux pads from paul eklund.

and as far as i can tell the biggest brakes you can run under the 14s are the stock ones.

bigger brakes need 15s and you have to get specific 15s to make sure they fit.

like wrx 15s need racelines, compmotives, speedlines or something like that.

there might be some oem 15 wheels that fit but i am not sure as i have never really looked into it since the stock brakes seem to work just fine for what we need to do.

we do run w/willwood high temp brake fluid and are probably going to upgrade to braided steel brake lines.
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