3-Series (E21, E30)Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.
Now i know that in the rear you need eather e30 m3 trailing arms or 318ti or z3 becouse they all share the same hardware but i have a pair of e36 325is stearing knuckles and i dont see why there cant be a way to put them on becouse alll the ball joints are the same size taper and i think the strut bearing hole for thr stut tower are the same so i would just have to figure out what shocks and spring to use to give me a low ride the stock e36 springs and srtuts are to long they would make the car look like a four wheel drive any in put would be great
E36 conversions need the E36 M3 3.2 control arms to bring the wheel forward or offset bushings so the wheel will be centered in the wheel well. Also coilovers are needed because the E36 springs are too big.
In the rear the E36 drive flanges look like they go straight on late (post 9/85) E30s, but the mounting face is 11mm inboard compared to stock E30. The height difference in disc rotors(E36/E30) is 8.4mm so a spacer may be needed either on the caliper mount or behind the disc brake. E36 compact flanges are 24mm wider than E30, fine if your going with the E36 setup in the front, the wheel offset will be the same, but it won't if you have an M3 front and if you want to keep offsets the same... Also E30 M3 flanges for late E30, later E30s have larger rear bearings, but are rather expensive. All the flanges will fit on the drive shafts E36 E30 E36 compact all the same splines. (although the length my be different) E36 compact (not 323ti) have smaller bearings same size as the pre 8/85 E30 so you may need the whole trailing arms.
Although, some find the 5 lug conversion impressive, and some will argue the benefits of the 5 lug conversion. I personally can't justify the cost. Brakes, suspension, drive train, rims and all of the other parts needed for the conversion will cost on average about $3000 and up.
I have a set of five lug bbs rims from a 528 with the sport package. 17x9 with a two inch lip there the perfect rims for a hooked up e30.they need a little rim work but there going to be great on the e30.
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