can anyone tell me if these wheels and tyres will fit my mk1 1997 1800 mk 1 eunos
| Item specifics - Car Wheels | ||||||||||||||||||||||||||||||||
|
BMW e30 coupe.
Any questions please ask.
ET=20
thanks in advance.
ET=20
thanks in advance.
Those should fit. Your rolling radius will be a little larger than standard, but given that the speedometer reads about 5% fast at 70mph on 185/60R14s, with those tyres it should be spot on! Drop down to a 195/50 or 205/50 tyre if necessary.
The wheel centres are a little larger on the BMW (57.1mm as opposed to 54.1mm on the Mazda) so use the correct tapered or radiused nuts and tighten evenly to the correct torque. As they are aftermarket wheels you can probably pick up a set of the correct sized spigot rings for less than a tenner.
From personal experience I would put spigot rings in.
I used to run a set of Volvo T5 wheels on a VW. I had new inserts made to correct the PCD which was fine, they still vibed at about 70mph though.
Back to the Engineering shop and 4 shiny spigot rings later, all was well…
The aftermarket wheels on my Eunos have plastic spigot rings that seem to work fine, so perhaps they don’t have to be too precise?
I run plastic spigot rings on my 7 x 15s and torque my nuts (oo-err missus). Captain Muppet runs without spigot rings on his weird and wonderful collection of rims though and apparently has no issues…
What torque should alloy wheel nuts be tightened to?
Not sure what they should be, but I tighten mine to 75 ftlb and the wheels haven’t fallen off yet …
Hang on, 1990 workshop manual seems to suggest 65 - 87 ftlb.
The number in that list which makes me pause is the offset - “ET20”. A 20mm offset is only half the ideal figure, so the wheels will stick out about 20mm or so firther than stock. Not a terribly big deal, but you may find they’re inclined to tramline.
Sounds ideal, almost flush with the wheel arch then. Will give the car a nice stance.
Thanks, 75 it is then.
[:D]
Yep, no spigot rings for me. But I am very careful as to how I fit wheels and how I torque the nuts up. I’ve even taken the wheels off and refitted them after watching how some volunteer “pit crew” have done them for me.
I’ve just done a rough calc and I have done something like 400 wheel changes on my MX5 since I got it.
Spigot rings are cheap, and it’s one less thing to worry about if you get them. My huge collection of rubbish wheels really aren’t worth the effort though.
If they are TSW manufactured they are likely to have a 72.6 centre bore. Most aftermarket wheels these days require spigot rings as it allows for a wider fitment range. Most aftermarket parts companies can supply these.
The Captain is right again - spigot rings are cheap. I got a set of 4 new 72.6mm - 54.1mm rings for my wheels for £6.98 inc. postage.