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Old 04-18-2022, 09:47 AM
Mike_Gr Mike_Gr is offline
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I did this upgrade a few years back. Broke the same bolt when I went from the goodyear tires that came on the car to Nitto NT05r then Nitto NT01. Defiantly keep an eye on things. I next broke a mounting ear off the rear diff cover. Replaced that with a new OEM cover from BMW. Then sheered three teeth of the ring gear. I ended up doing the e36 Rallyroad bulletproof diff conversion which replaces the e36 diff with an e32 or e34 from a 7 series or a M5 respectively. It increases case size, goes from 180 to 210mm ring gear, adds in a second mounting point in the front (4 bolts total), uses a bittet rear mounting plate instead of the integrated rear arm mounting tabs. Have not had a single issue since. This kit does require welding and then milling rear output shaft spacers to be thinner as the diff is wider than an e36. Vintage Motorsports did this upgrade for me.
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Last edited by Mike_Gr; 04-18-2022 at 09:50 AM..
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