Broken rear end(ring pinion)

[filh]

I must say I the first to be guilty about breaking rear end gears .
The way I drive involve that breakage .
As I don't have a very powerful engine ( by missing budget) I often use the well known " braking on gearbox and rear end "
My friend with his AE86 is doing the same , but he's got 160hp , and broke some rear ends too .
A solid pinion spacer ? never heard about that , but so far I could check , it's seems that it didn't had too much clearance .
But it's never bad to have a regular checking . And I also change oil twice a year (each 6 rallye) , using Kernit Top Blend (40€/liter).
Thanks for the info
Hope I can get my happyness soon......
phil