2002 1 Report post Posted December 2, 2015 I know it's a long shot but I'm looking for a 5.13 ratio to suit a medium case diff (188). Quote Share this post Link to post Share on other sites
eliongater 718 Report post Posted December 7, 2015 If you want new... https://store.vacmotorsports.com/bmw-188-size-ring-and-pinion-gear-sets-e30-e36-non-m-etc-p2562.aspx What do you want one for, as it must be something special to require a diff ratio that high? Quote Share this post Link to post Share on other sites
2002 1 Report post Posted December 9, 2015 It's for my rally car, currently I'm running a 4.45. a 5.13 would bring the overall ratio for 5th down to where 4th is at the moment. As I never use 5th in a stage it's basically wasted so a 5.13 will effectively give me an extra gear. I've got a close ratio box so 1st 2nd & 3rd are all fairly tall Quote Share this post Link to post Share on other sites
