Here ill try to outline most of the steering wheel options that were available stock to the E30.
4 spoke “standard” steering wheel
This is the as basic and standard as it gets, no air bag, no sport properties just your normal plain stock steering wheel. This is what you got if you didn’t opt in for any packages/options.
Value = practically worthless
3 spoke “sport” steering wheel
This is what you got if your car came with the sport package, thus its name the e30 sport steering wheel. Advantages of a 3 spoke wheel over a 4 spoke is that you have more open space to grasp the wheel in different positions during “sport” or spirited driving.
Value = wouldn’t pay over $50
M-tech 1 steering wheel
This steering wheel was offered standard in the E30 m3 and its evolutions. There were to sizes available 370mm and 385mm. The 370mm is demands a higher price only because there is less supply of it, I wouldn’t say it is any better. This wheel is my personal “affordable” option favorite as it has a nice classic look with an accent of Motorsport colors, and slight groves around the 3 and 9 oclock positions for your fingers/hands to almost taunting you to engage in “spirited” driving.
Value = 385mm $70-100, 370mm $150-250
Mtech 2 steering wheel
This is the new fangled version of the mtech 1, a facelift version if you will. It looks more modern and has more aggressive grooves for your hands to stay in place at 3 and 9 o’clock hand positions. Most people love it; personally however i think it looks a bit to new school for the e30.
Value = ~$250
Blackline steering wheel
Never seen one in person but apparently it was only offered to right hand drive e30’s. Also because of its rarity it is quite sought after. Personally I dont like it much i think it has a ricer twist to it.
Value = $300-450
Woodline Steering wheel
Basically the woodline with a wood outside, I personally love wood steering wheels and thus I love this specific wheel because it looks classy (because of the wood).
Value = wild guess $500+
Mtech 2 e30 m3 evo steering wheel (Mtech 2 alcantara)
Basically a fancy alcantara version of the mtech 2 steering wheel. People seem to love it, I however dont think the alcantara has a “crisp” enough look to my standards.
Value = $400
E30 airbag (vert and touring 92+)
Has to be the ugliest steering wheel ever offered, and practically speaking airbags back then were as effective as grenades going off in your face. Unless you collect wheels id stay away from 80’s/ early 90’s steering wheels as they do more bad then good.
Value = worthless to me, who knows how much to collectors.
“Regular” E30 airbag steering wheel
More appealing then the vert/touring model but still would rather have no airbag.
Value = worthless
Alpina 3 spoke Steering wheel
Alpina’s twist on the mtech 1 steering wheel basically.
Value = Debatable
E30 Z1 Steering wheel
Was offered standard in the E30 z1, all there is too it really.
Alpina 4 spoke
Alpina and hartge both seemed to favor 4 spoke steering wheels for their cars, who knows why. This is a standard Alpina wheel.
Value = $500
Hartge 4 spoke
Very close design to the alpina 4 spoke just with a hartge badge; maybe the same company made the steering wheel for both companies.
Value = $500
Ac Schnitzer 3 spoke leather
Very Beefy looking 3 spoke offered by ac Schnitzer.
Value = $600 for rarity
Ac Schnitzer 4 spoke wood steering wheel
Left the best for last, because this is a special one. Basically this steering wheel is the same steering wheel that was offered in Alpina’s and Hartge’s however this one offered by AC Schnitzer is wood. Very rare, very nice, and worth every penny.
Value = $1000 (could be significantly more for a very nice example)
Notable mention that isnt OEM or stock but is still very nice
Nardi wood steering wheel
I am a sucker for wooden steering wheels and this one is very nice in my opinion, can be found on ebay fairly easily. Remember though this isnt factory or OEM
Value = $100-150