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OzECruisers General Discussions E/N/D vehicles General Discussion ONLY. NO TECH THREADS

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Old 04-06-2007, 10:48 PM   #1
XPfalcon170
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Default Tyre profile question

Hey. Just a query as to what tyre profile and width people are running for 18" rims on the e-series. I've got a set of 18' rims less tyres and am not sure whats the best profile to go with as to cause minimal upset to the speedo reading.

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Old 04-06-2007, 11:07 PM   #2
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235/40/18

these are only 3mm(643mm) in overall diameter smaller that 205/65/15 wich are 646mm. you can have up to -2/+2% difference without affecting speedo.

go to www.kumho.com.au/tips_diameter :

EDIT.

What car is this for?
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Old 04-06-2007, 11:09 PM   #3
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ok, thanks mate. Its for my el. 18s be a bit to big for the xp i would think.
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Old 04-06-2007, 11:16 PM   #4
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lol yer i just wasnt sure, i just saw your name and pic ! :

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Old 04-06-2007, 11:21 PM   #5
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Your tyre profile should be based on how wide a tyre you are going to use, you need to keep the rolling diameter as close to standard as possible
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Old 04-06-2007, 11:32 PM   #6
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Quote:
Originally Posted by ratter
Your tyre profile should be based on how wide a tyre you are going to use, you need to keep the rolling diameter as close to standard as possible
yes thats correct, but the question was, what size/width were we running! and what would cause minimal upset to the speedo, you could not get any closer to 646mm with 18's if you tried. i also gave a website with info on sizes!
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: 14.915 @ 151 kph 60' 2.254 :
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Old 04-06-2007, 11:47 PM   #7
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yeh, going from that calculator, the 235/40 would be the best match to go with. thanks for that guys. time to hunt down some tires.

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