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1,6,7,8 - Series and Mini Cooper General Chat related to models that do not fit into particular categories above. Please try to put your discussion in more appropriate sections. This section does cover the 1 Series, MINI Cooper and 8-Series vehicles: BMW 830i, BMW 840Ci, BMW 850i, BMW 850Ci, BMW 850CSi, M8, Alpina B12, BMW CS Concept and others.

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Old 10-11-2004, 04:49 PM   #1 (permalink)
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Does anyone know whats the biggest wheel that will fit a 645Ci?

- Jason

P.S. Has anyone tried these euromints caffeinated mints? I got some on eBay and they're fantastic!
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Old 04-09-2005, 12:24 AM   #2 (permalink)
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I wouldn't recomend getting larger wheels, they lower your horsepower. The car becomes harder to stop, the acceleration is worse, whatever you do, try to keep the overall diameter of the wheel and tire combo, My E32 has 20"x 9, but the tires are 245 40 18, the sidewall is only 2 1/4 inches keeping the same overall diameter
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Old 04-09-2005, 02:03 AM   #3 (permalink)
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well i know what rb26 is trying to say but getting larger wheels doesn't affect the horepower of the engine. all it really does is make it seem like you have less HP. becasue what it is is that the engine,transmission and final drive gear ratio is designed to get the best performance froma set size out diameter wheel/tire combo. and the bigger the outer diameter is the harder the car has to work to get things moving. however to answer your question i have seen as big as 24's on a 745iL. infact just today i put a set of 20 inch rims on a 745. i would imagine that you could get something close to those sizes on your 645. but i'm kinda with rb26 as far as if you should or not. i think that the factory sizes are big enough. but it's your car you can do waht you want we are just here to give you our input.
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Old 07-26-2008, 10:42 PM   #4 (permalink)
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You can run up to 22"s.
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Old 07-27-2008, 12:20 AM   #5 (permalink)
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Old 07-27-2008, 09:24 AM   #6 (permalink)
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Holy old thread, Batman!
lol...yeah I know but information is information no matter how late it comes, maybe the next person thinking about this situation of size could reference this thread for information...but thanks for pointing that out Boy Wonder Lol!
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Old 07-28-2008, 12:44 PM   #7 (permalink)
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lol...yeah I know but information is information no matter how late it comes, maybe the next person thinking about this situation of size could reference this thread for information...but thanks for pointing that out Boy Wonder Lol!
In general, we discourage bumping threads this old at Bimmerwerkz unless you have a further question about its contents.
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Old 07-28-2008, 01:35 PM   #8 (permalink)
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In general, we discourage bumping threads this old at Bimmerwerkz unless you have a further question about its contents.
Understood...actually I should have know better!
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