Changing from 13" wheels to 10" - problems at besiktning tim

[silverbullet 96]

When i change my wheels down to 10 inch am i going to have any problems at the besktning?

cheers

Craig

[heemini]

Speedometer will not read correct. And what about the gearbox? Gear ratio?

[silverbullet 96]

I totally overlooked that problem!


This site is useful! http://www.guess-works.com/Tech/ratio.htm

[minijanne]

8.4 discs - clearance with new wheels?

[heemini]

You have to change the calipers and discs to 7,5. There is a kit available from Mini Spares.

[silverbullet 96]

Brakes are under control guyS

I am going for 7.9" discs and calipers, A bit less hassle to fit than the 7.5" cooper s set up. As they use the same flanges as the 8.4" set up.

My final drive is 3.21:1 (which is the same as metro turbo and japanese SPI), not sure why my car has this, but according to the engine code (12A2Ek71) it does. I can see that the duration of acceleration is longer with 10's compared to 13's but teh top speed in each gear is lower.

[silverbullet 96]

So will changing to 10" wheels be a problem at the besiktning?

[minijanne]

Well, should not really. As I understand the only thing they should bother about is the circumference does not deviate more than +/- 5% from the diameter the car is typed for.

[silverbullet 96]

Thanks Janne!

There is a 3.96% decrease in size between 175/50/13 and 165/70/10.

[heemini]

Go for it, Craig!!!!

[RAINIER]

What are 7.9" discs?

[silverbullet 96]

http://www.minisport.com/mini-spare-par ... r_Kit.html

Basically 8.4" discs turned down to 7.9"

[RAINIER]

That was very interesting. And it'll fit with 10" Cooper wheels?

[silverbullet 96]

Most 10 inch wheels fit, the ones which don't tend to be "older" styles. Minisport also do a vented 7.9" disc.

[RAINIER]

What about original 4,5Jx10 Cooper wheels?