I tried one of the top post Optima Red tops I use in the E46 and I ran into the same issue. The Optima is also too tall to use the top of the battery box. Instead of reinventing that wheel, I went with a Genuine BMW battery. When the Yahoo Groups 318ti list was more active guys would post when their original batteries quit. I seem to recall quite a few going over 7 years, that's about what I get out of the Optimas. __________________ SUPPORT 318ti.org! CLICK THE LINK ABOVE! Hosting a forum like this is not free. 318ti.org is one of the best BMW forums on the web because it is member supported, not vendor supported. The cost to become a Supporter is a nominal $10.00... A YEAR! DO IT! NOW! www.BimmerBum.com ALL NEW! 318ti Specific Parts For Sale www.facebook.com/BimmerBum BMWCCA #132203 95 318ti Club Sport 98 318ti Active S50 Swap |