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Motorsports & Track Forum
From Auto-X to Trackday to Racing and Professional Motorsports – this is the place to discuss making BMWs fast

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Old 09-02-2004, 03:10 AM   #1
journalism1020
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Anyone running 16" in Solo?

What is the predominant tire/wheel size e46 325 owners are using at Solo events? A friend of mine, an experienced Solo 2 competitor, (in VW) said the weight of a 17" with 225/45/17 on my car (325i) isn't worth the little extra turn-in and to go with a lightweight 16" with 225/50/16. I already have two sets of new performance 16" tires, so it would be more economical to go with the 16" wheels, but if a 17 would greatly improve handling then to the classifieds the tires go! I'm about to do some track days, what is your opinion/experience? - The car will have UUC stage 4 in the next month or two. - Thanks!
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Old 09-02-2004, 03:31 AM   #2
Commander FAT
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I guess which way you go will also depend on the sidewall thickness. Obviously a thicker profile tire will have more flex in it which won't help in handling. Then again, an 18" inch tire will have much less flex however you will also have a heavier wheel with more mass further away from the center of the wheel which won't help either.

On the other hand you can find 18" competition wheels that weigh much less than 17" OEM wheels.

If I were you I'd get lightweight 18" wheels with good tires.

There are some real nice SSR Competition wheels at Tire Rack.
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Old 09-02-2004, 02:01 PM   #3
M-bird
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Quote:
Originally Posted by journalism1020
What is the predominant tire/wheel size e46 325 owners are using at Solo events? A friend of mine, an experienced Solo 2 competitor, (in VW) said the weight of a 17" with 225/45/17 on my car (325i) isn't worth the little extra turn-in and to go with a lightweight 16" with 225/50/16. I already have two sets of new performance 16" tires, so it would be more economical to go with the 16" wheels, but if a 17 would greatly improve handling then to the classifieds the tires go! I'm about to do some track days, what is your opinion/experience? - The car will have UUC stage 4 in the next month or two. - Thanks!
245/45/16 is the size to get. 1/2" smaller diam than stock for better accel, lots of tire selection, also avail in track and autocross compounds

Personally I would spend money on an EVO school first.

BFG K/D or Kumho Ecsta MX or Falken Azenis are the hot street tire for autocross - not sure if they're avail in the 245/45/16 size.

If you want to win you need to get 245/45/16 Hoosier A3S04 tires but they are autocross only - you will waste them in under ten minutes at the track. Stay away from the Kumho Ecsta V700, the Victoracer V700 is ok for full duty track/autocross

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Old 09-02-2004, 05:22 PM   #4
journalism1020
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Originally Posted by M-bird
245/45/16 is the size to get. 1/2" smaller diam than stock for better accel, lots of tire selection, also avail in track and autocross compounds

Personally I would spend money on an EVO school first.

BFG K/D or Kumho Ecsta MX or Falken Azenis are the hot street tire for autocross - not sure if they're avail in the 245/45/16 size.

If you want to win you need to get 245/45/16 Hoosier A3S04 tires but they are autocross only - you will waste them in under ten minutes at the track. Stay away from the Kumho Ecsta V700, the Victoracer V700 is ok for full duty track/autocross

EricH
been around a cone or two
Budgetwise- would better track and daily drive handling result from upgrading from 225/50/16 performance tires to 225/45/17 perfromance wheels/tires only OR having lightweight 16" wheels 225/50/16 (same brand/model tire for argument sake) with UUC Stage 4 - basically I have a budget for either wheels/tires or suspension. And, I already have a set of unused Goodyear F1 GSD3 I got free, as well as the Pirelli PZero Nero I put on the car the day I bought it.
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Old 09-03-2004, 03:55 AM   #5
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I went with 17" ssr comps 8.5" in the front 9 in the rear.. 255's all around..

I'd also start with the suspension but thats just me..

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Old 09-22-2004, 12:17 AM   #6
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I'm in the same situation and will probably put some 16 inch summer tires on my 325Ci convertible which I will also use for auto-x.

Does anyone know a convenient place to find out the weight of my 16 inch OEM wheels?
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Old 09-22-2004, 12:20 AM   #7
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Originally Posted by Machan
I'm in the same situation and will probably put some 16 inch summer tires on my 325Ci convertible which I will also use for auto-x.

Does anyone know a convenient place to find out the weight of my 16 inch OEM wheels?
They probably weigh at least twenty pounds.
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