Quote:
Originally Posted by jbash87
I'd love to hear your thoughts on towing with the 3.15 diffs. I really want to drop my final drive ratios for daily driving but I tow my surf boat around all summer. The boat weighs a bit more than your trailer depending on how much gear I have stashed in it.
My initial thoughts are that it won't matter much, maybe I'd lose 6th gear unless I'm really getting after it on the highway. Any insight would be much appreciated.
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Don’t do it. If you’re going to do anything there’s a guy on the bmw North American diesel group on Facebook that’s selling a kit to swap our 6 spd to the newer 8spd trans, full integration. Only then would it make sense to swap to 3.15 gearing.
You’re putting unnecessary strain on the engine and drivetrain with the stock 6spd. There’s a reason bmw went with 3.64 gearing in these and it wasn’t because of towing.