R56 Anyone running 205/40-17 tires?

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Nov 30, 2012 | 12:42 PM

Ryan89

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Anyone running 205/40-17 tires?

Hi guys, Found a decent second set of wheels I was planning on picking up for the summer. 17in is where I want to be. I believe I saw a chart with the different stock wheel diameters with different tires/rim sizes, but can't seem to find it.

The set I am looking at has 40s which I am not sure if that would be good or bad. Anyone run 40s before?

Thanks

Nov 30, 2012 | 08:07 PM

bluefox280

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From: Broomfield, CO

There's several running 205/40-R17 tires; typically on a lowered vehicle with wider (7.5"+) wheels.
Search the wheel/tire archives as you'll find lots and lots of images.

- Erik

Nov 30, 2012 | 09:28 PM

Big Jim Swade

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From: Central Idaho

I'd go with at least the stock size of 205/45-17's to keep your speedometer somewhat close

Dec 1, 2012 | 05:25 AM

Ryan89

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I would certainly prefer the stock 205/45 but there is a good deal on a set of wheels that have 40s on them. Was just curious if anyone ran them. I know the wheels are 17x7. I'll check out the pictures, thanks Erik

Dec 1, 2012 | 06:44 AM

hemisedan

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From: Des Moines, Iowa

I've been running 215 x 45 x 17 tires since it was new. The 205's have around a 7 mph speedometer error, thanks to Europe in trying to slow cars down. With the 215's I have about a 1 mph error. I've had this checked by Iowa Highway Patrol radar that they use.

As for going 205 x 40, I think that 225 would work better for you and I've heard of guys running them on hatch's with no problems. Get with TireRack, they are good help.

Dec 1, 2012 | 07:06 AM

Ryan89

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Any idea where I can find the chart ive seen floating around on wheel diameter with the different tire sizes that come on the mini?

Dec 1, 2012 | 08:37 AM

cristo

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Joined: Apr 2003

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From: York, Pennsylvania

Halfway down this page on the other forum (that I seldom visit anymore)
http://www.mini2.com/forum/faq.php?faq=faq_wheels_tyres
is this:

On street cars, it should have an overall diameter that is within ±3% of the factory specification.
The ±3% variation is recommended for street cars in order to maintain accurate speed data
going into the computer, thus keeping odometer and speedometer changes negligible.
While a ±3% diameter increase or reduction in tire diameter may sound very limiting,
in most cases it allows approximately a ±3/4" diameter change.

Assuming 24.00" (609.6mm) as the factory specification for overall diameter, any of the following tire sizes may be appropriate:

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Dec 1, 2012 | 10:27 AM

llewellyn

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From: Nova Scotia

I have 205 40 17's General Exclaims on my car - the speedometer does read off. You'll have a bit more fender gap, and you wouldn't think it would make a big difference, but your car will sit a bit lower. I can just fit the toe of my shoe under the front rubber lip under the bumper. Everyone asks me if I have springs on it haha..

Dec 1, 2012 | 07:41 PM

mini coop

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From: World Championship 50 Fans

Discount Tire Direct has a calcuator. Top right under info center and then click on tire size calculator. Running these against stock will mean a diference. You don't say what your stock size is but 205/40/17 is not a direct replacement for any stock size tire that Mini uses. This calculator will provide diameter, circumference, width, side wall height and very important.....mph equivalent against the stock tire size.