Hi do u know how many relays r in a bmw e30 325 I fuse box plus in size car and where can I get all of them thanks. Reply. Hello! I have a 1990 BMW 325i, e30. All Set it to 20v and put the black end on the negative and the red on the positive terminal of the battery. Both came gave similar results of 12.5 volts with engine off and 14.5 volts with engine Battery Size Requirements. Car Model Description Model Years Max Size AVG Size Min Size; BMW 3 (E36) 316 i: 09.1990 - 09.1993: 9.53” x 6.89” x 7.48” 242 x 175 x E30 Buyers Guide – 325i/is. The 325i/is E30 variant is the second most common model in the US and unquestionably the most sought after. The 325i/is’ main selling point is the M20B25 engine. The M20B25 engine is the most powerful engine offered in the E30 platform, producing 167 horsepower and 164 lb-ft of torque. Clutch/Driveline/Diff A full line of clutch, transmission, differential and driveline parts for the BMW 2002 including parts for the 5 speed upgrade. Body & Chassis Body flares, air dams and spoilers for the BMW 2002 including turbo fender flares. Wheels Alloy wheels for the BMW 2002, from 13″ to 15 inch and 16″. Misc Parts; E3/E9 Parts I recommend group 48 batteries from Costco/autozone made by Johnson controls. Bosch from pepboys is also good. 3 year free replacement. It's the right size battery for the car with about 850/875ca and 750cca which is plenty in warm climate. Group 90 is bigger/heavier with slightly more amps if you need it. bmw 325i e30 - $23,016 The E30 is one of the most respected BMW models. Although the E30 M3 is out of reach for most of us thanks to its collector status, there's a cheaper alternative in the form The main difference between the 325i and the 328i is that the 328i has a more powerful engine. BMW 3 Series Overview The BMW 3 Series is probably BMW’s best-known model, as well as one of its most popular models; the 3 Series alone makes up nearly a third of BMW’s annual sales. The first generation of the 3 Series debuted in 1975 with the E21 3 Series, although it wasn’t until 1982 when OZ6V.