Tyre Size Help!!! - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 12-10-2004, 11:20 AM
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Hello all,
Yes per usual another unsure user who doesnt know the correct trye size to use for the wheels hes purchased.
I have a set of Azev A types at 17" x 8, I cant be sure if i can put 245/45 tyres on the back and 235/45 on the front or if i shud put 235/40 all round or 225/45 all round please someone give me the correct profile to use so i can carry on motoring!
The car is a 320i se 1996 saloon. suspension and springs etc etc are all standard.
Many Thanks
Sol
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#2 (permalink) Old 12-10-2004, 01:59 PM
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235 all round is what i have, i get lots of pulling and road noise when the tires wear low but it well made up for in corners. more tread done means more traction , which can lead to more hair raising cornering.

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#3 (permalink) Old 12-11-2004, 09:44 PM
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Thx for the reply, is that 235/40 or the 45 profile?
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#4 (permalink) Old 12-12-2004, 08:18 AM
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well i have 235/40

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#5 (permalink) Old 12-12-2004, 04:00 PM
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225/45/17 throw some pirelli's on there
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#6 (permalink) Old 12-12-2004, 04:07 PM
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235/40 yokohama avs sports

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#7 (permalink) Old 02-28-2005, 12:02 PM
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Talking


Thanks everyone who gave me ideas i went for 225/45's all round in the end to be on the safe side.
Very happy with the out come.
i know its in the wrong post but how can i upload pics in an album? as atm when i pull down the menu part it doesnt allow me to upload or delete an album etc. any info appreciated.
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#8 (permalink) Old 02-28-2005, 05:54 PM
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Quote:
Originally posted by Furious@Dec 10 2004, 02:59 PM
235 all round is what i have, i get lots of pulling and road noise when the tires wear low but it well made up for in corners. more tread done means more traction , which can lead to more hair raising cornering.
[snapback]247445[/snapback]

well put!

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#9 (permalink) Old 03-01-2005, 12:55 AM
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MAN!!! i was hoping to find what profile to use for 17"s. If i could choose, id take 40, but i also see many ppl with 45. so which is it? obviously your rolling diameter changes according to your tire profile. i want my speedo to be accurate. Help??

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#10 (permalink) Old 03-01-2005, 02:18 AM
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i personally would say the 45 series, its a more comfortable ride than the 40's, and the performance is pretty much the same. and the only way to get an accurate speed reading is to slap your tires on and take to a dealer or specialty shop to re-adjust it. sux huh... ghead
i know this is off topic, but i might be getting rims soon, and the last tires i had on my previous car were yoko paradas...they were , anyone know anything about the paradas spec 2. im pretty sure its the same, just wanna see if anyone has it on they car and how it rides on a e36.
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#11 (permalink) Old 03-01-2005, 06:40 AM
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I beleive the correct size (certainly here) would be 225/45x17....but if you want your speedo to read correctly bearing in mind that all speedos read high by a small margin, go for slightly larger tyres to "correct" the OEM speedo error.
Either 225/50 or 235/45 should be about right. My speedo always reads 2 mph fast regardless of speed. I will be changing to 225/60x15 for winter use and 225/50x17 for summer.

Best regards David
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#12 (permalink) Old 03-01-2005, 09:03 AM
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Quote:
Originally posted by Silencer@Mar 1 2005, 02:55 AM
MAN!!! i was hoping to find what profile to use for 17"s. If i could choose, id take 40, but i also see many ppl with 45. so which is it? obviously your rolling diameter changes according to your tire profile. i want my speedo to be accurate. Help??
[snapback]301593[/snapback]

Go to www.miata.net/garage/tirecalc.html, (I know, a Miata site, but good info). You can type in different tire sizes and get the difference in diameter, circumference, percentage of change in speedo reading.

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#13 (permalink) Old 03-01-2005, 10:18 AM
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I know your speedo can be out after changing wheels, but dosn't it only make it a few seconds out? IF THAT! I mean your not going to be doing 50 outside when your speedo reads 30.
Anyway, I'd go for 225/40/17's, thats what I got, but they struggle to go under the rear arches without them rolled. Can hear them rubbing every now and again.

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#14 (permalink) Old 03-01-2005, 02:13 PM
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on my momo 17x 18.5" I am running 235/40 17 w90 in front, and 245/40 17 w90 in back

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#15 (permalink) Old 03-02-2005, 01:39 AM
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Quote:
Originally posted by 2ndclasscitizen@Mar 1 2005, 05:18 PM
I know your speedo can be out after changing wheels, but dosn't it only make it a few seconds out? IF THAT! I mean your not going to be doing 50 outside when your speedo reads 30.
Anyway, I'd go for 225/40/17's, thats what I got, but they struggle to go under the rear arches without them rolled. Can hear them rubbing every now and again.
[snapback]301720[/snapback]
Your right, it will only make a few MPH difference usually if you don't go too wild.
But as the speedo is only out by a few MPH and you have to go wider bigger to get the difference....why not?
I am suprised your tyres rub at that size, they should'nt if your within offset specs, have you lowered your suspension? (silly question eh? )

Best regards David
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