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The Tire Rack's Tire & Wheel Forum
Use this forum to discuss anything in relation to wheels to tires to offsets.
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Old 07-08-2014, 04:14 PM   #1
ijoelpod
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Join Date: Nov 2013
Location: MA
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My Ride: 2002 325i
17" wheels on stock non sports suspension

Total Noob here, but I have a 2002 325i with stock non sport suspension and 16" wheels. I need new tires and I want to run 17's on my car. My question is would I have to alter the suspension?
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Old 07-08-2014, 04:33 PM   #2
Rob43
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Join Date: Oct 2009
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Originally Posted by ijoelpod View Post
Total Noob here, but I have a 2002 325i with stock non sport suspension and 16" wheels. I need new tires and I want to run 17's on my car. My question is would I have to alter the suspension?

No.

Post up what your current tire size is, & what you want to go to.



Rob43
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Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 S.C.C.A.
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Old 07-08-2014, 04:38 PM   #3
ijoelpod
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No.

Post up what your current tire size is, & what you want to go to.


Rob43
my current tire size is 205 55 16, and I want to go to 225 45 17. I used the tire calculator and it seems there wouldn't be too much of a difference.
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Old 07-08-2014, 04:45 PM   #4
Rob43
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Originally Posted by ijoelpod View Post
my current tire size is 205 55 16, and I want to go to 225 45 17. I used the tire calculator and it seems there wouldn't be too much of a difference.
That will work just fine.

As a note, a 330Ci comes in many cases with the M68 wheels. I mention this because they are F 17x7.5, R 17x8.5 so the Front tires are 225/45-17 & Rear 245/40-17

All of this depends on what Width wheel you go with.


Rob43
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Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 S.C.C.A.
(DynoDynamics https:vimeo.com/8486878 Dyno Video)
"Chance Favors The Prepared Mind"

Need Help With Your Nitrous Ambitions ?.....PM ME
Quote:
Originally Posted by RacerX View Post
Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
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Old 07-08-2014, 04:49 PM   #5
ijoelpod
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My Ride: 2002 325i
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Originally Posted by Rob43 View Post
That will work just fine.

As a note, a 330Ci comes in many cases with the M68 wheels. I mention this because they are F 17x7.5, R 17x8.5 so the Front tires are 225/45-17 & Rear 245/40-17

All of this depends on what Width wheel you go with.


Rob43
So if I want to go with 225 45 17 size tire all around , what is the general wheel width I should be looking for?
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Old 07-08-2014, 05:08 PM   #6
Rob43
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My Ride: 03 331Ci 5spd R1200R
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Originally Posted by ijoelpod View Post
So if I want to go with 225 45 17 size tire all around , what is the general wheel width I should be looking for?

17X7.5 is spot on. But 7" to 8.5" works. I have no idea what your budget is, but if you can afford light weight wheels, this will be a performance upgrade.


Rob43
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Rob #43 ITS/ITR/STU, BMW 325I, STU LAP RECORD
SUMMIT POINT WV 1:24:229 S.C.C.A.
(DynoDynamics https:vimeo.com/8486878 Dyno Video)
"Chance Favors The Prepared Mind"

Need Help With Your Nitrous Ambitions ?.....PM ME
Quote:
Originally Posted by RacerX View Post
Nitrous is a little trickier than boost, but it's not the spray that kills motors, it's STUPIDITY!!
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Old 07-15-2014, 02:56 PM   #7
avincent52
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My Ride: 325iT 5 speed/Sport
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Originally Posted by Rob43 View Post
That will work just fine.

As a note, a 330Ci comes in many cases with the M68 wheels. I mention this because they are F 17x7.5, R 17x8.5 so the Front tires are 225/45-17 & Rear 245/40-17

All of this depends on what Width wheel you go with.


Rob43
One of the advantages of square setup (all 4 wheels/tires the same width) is that you can rotate the tires to maximize tire wear.
With a staggered setup (rears wider than fronts) you can't do that.
A friend also suggested that in a stock 325, the staggered setup made the handling worse by increasing the natural understeer.
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