They were undersized and overheated quickly. Once the engine oil temperatures were under Sneed4Speed developed a cooler kit that forced air from the front bumper through flexible hoses into proprietary brackets mounted on the wheel hub to blow the air directly into the brake rotor ,Best Sti Shift knob, and cool the brake system. The kit worked very well, reducing peak temperatures by over 500F! control the next weak link in the new MINI was the front brakes.
After Sneed4Speed had resolved the shortcomings of the factory in the oil cooling and brake areas they turned their focus to suspension, working with other companies, they helped develop coilover suspension kits, camber plates and suspension bushings to make the MINI handle even better than it already did.
Please read the originial post here: https://www.sneed4speed.com/mini-r55-59-2007-2013/