Join Date: Oct 2002
Location: sf east bay ca.
Thanked 355 Times in 285 Posts
Re: What is the best Bang for Buck mods for E39 M5
best mod for acceleration is the diff. you can get the 3.45 diff from dinan, which i believe is 2495 (there was a 1995 group buy, which is over) or from evosport. I think evosport is around 1900 or so as well, for the ring and pinion change, but they can also modify the lsd lockup, if you're planning on drag racing. Otherwise, i'd go along with the driving school suggestions, if you've never been on the track. For about $500, you have more fun than anything, and pick up some good skills that you can use everyday.
93 M5 3.8 Sterling Silver, Black 5/93 production (euro)
94 M5 Touring Madeira Schwarz, Black 10/93 production
88 M5 Black/Natur (US spec)
90 325iS, Black/Natur 5 speed
00 528i, sport Biarritz Blue, Sand
93 Range Rover County LWB, Roman Bronze
09 335d Japanrot/Black