7.5 Conversion
#1
Posted 19 February 2018 - 12:53 PM
#2
Posted 19 February 2018 - 01:01 PM
Yes, you won't get 10" wheels over 8.4" discs
#3
Posted 19 February 2018 - 01:02 PM
#4
Posted 19 February 2018 - 01:09 PM
Mainly for the smaller wheel. There isn't much difference in the brake performance, the piston sizes and pad area are very similar. If you look at photos of the 2 discs you'l see how the 7.5 gives more disc diameter over the more conventional 8.4 by how the mounting flange is designed.
The 8.4 does give the pads better leverage against rotation, but the 7.5's were designed for use with a servo.
#5
Posted 19 February 2018 - 01:59 PM
#6
Posted 19 February 2018 - 02:20 PM
just look they are very different. or Measure.
#8
Posted 19 February 2018 - 07:08 PM
Also, the drive flanges mount differently. The 7.5" have 4 x Phillips head screws and the 8.4" have 4 x hex head bolts.
#9
Posted 19 February 2018 - 10:32 PM
To consider the stopping power it should be remembered that all those race and rally victories on which the legend of our little cars is based were achieved using 7.5" discs and 10" wheels with very few exceptions.
The pad specification is important and the best Mini brakes I have ever experienced are the 7.5" 'S' discs with Carbon-Metallic pads and AP600 brake fluid running with the standard 'S' servo.
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