Wheel size advice please

[Oldyellow]

I can pick up a set of 5 BBS alloys locally "worth the money" but wonder if they are ok for the Mk1.
According to what I have read the correct size is 14" 4x100 pcd 35... 38 offset and 54 centre bore. The wheels I am looking at are 14" 4x 100 pcd 35... 42 et and 56.5 centre bore so I think the only difference is the centre bore. Does this make a difference

[un1eash]

No it makes no difference as the bore size is larger which means they will fit. It it was smaller then you would have problems. You can get spiggot rings to make the alloys 54mm but its not needed really.

[Oldyellow]

cheers for that just gotta negotiate the price now

[IanClements]

The wheels I am looking at are 14" 4x 100 pcd 35... 42 et and 56.5 centre bore

Just check that the offset is indeed between 35 and 38 else you may get handling problems. Ideally you do need spigot rings to make them fit properly but I'm sure BBS will do some.

Also if they have tyres check the profile's right. If not then the tyres are worth nothing you.

[Oldyellow]

The wheels I am looking at are 14" 4x 100 pcd 35... 42 et and 56.5 centre bore

Just check that the offset is indeed between 35 and 38 else you may get handling problems. Ideally you do need spigot rings to make them fit properly but I'm sure BBS

It's wheels only so tyres aren't an issue the figures quoted are stamped on the wheels so 35 to 42 offset should be ok.

Hadn't thought about spigot rings must do some research

[mr2mk1chick]

A lot of the MK1 race cars use BBS alloys as they are nice and light (not sure which model of BBS, but the multispoke ones)

the ones you mention shoudl be fine

[cartledge_uk]

yep, these are the ones you'll be looking at (with less grass)

If you want to know what they are worth pm me (I supplied most of the mk1's with them from my 25 wheels I had at oone point )

They are off an MX5 if you were wondering (or an early E30 BMW)

[PsychomIKE]

No it makes no difference as the bore size is larger which means they will fit. It it was smaller then you would have problems. You can get spiggot rings to make the alloys 54mm but its not needed really.

Afaik spigot rings are very important if the centre bore is a different size. This is because mk1 MR2 wheels are hubcentric, i.e. the hub is designed to take the load and the nuts are there to hold it on. Not sure I would like to drive in a car where the bolts were taking the weight of the vehicle.

[un1eash]

What difference is abit of plastic going to make then? My standard teardrop alloys dont fit the hub, its a few mm out.

[Tom G]

The bit of plastic takes the load!
you also need spigot rings to centre the wheels, without them you'll be getting a nice massage at 60mph+

[un1eash]

Why dont my teardrop alloys fit the hub then?

[rootes]

No it makes no difference as the bore size is larger which means they will fit. It it was smaller then you would have problems. You can get spiggot rings to make the alloys 54mm but its not needed really.

Afaik spigot rings are very important if the centre bore is a different size. This is because mk1 MR2 wheels are hubcentric, i.e. the hub is designed to take the load and the nuts are there to hold it on. Not sure I would like to drive in a car where the bolts were taking the weight of the vehicle.

the hub locates so in that respect spigot rings are important to locate the wheel properly...

BUT then it is the friction between the face of the hub and the face of the wheel due to the force generated by the wheel nuts being tightened that keeps the wheel in place not the spigot rings...

Si

[OlberJ]

Therefor if you centre the wheel when you bolt it on tight you don't need spigot rings.

But feck tryin to centre the wheel without them.

Hence why, if you put them on without the spigot rings, they're off centre and they vibrate at speed.

Spigot rings are good.

[rootes]

Therefor if you centre the wheel when you bolt it on tight you don't need spigot rings.

But feck tryin to centre the wheel without them.

Hence why, if you put them on without the spigot rings, they're off centre and they vibrate at speed.

Spigot rings are good.

that is why i said spigot rings are important to locate the wheel properly

Si

[System-G]

Therefor if you centre the wheel when you bolt it on tight you don't need spigot rings.

But feck tryin to centre the wheel without them.

Hence why, if you put them on without the spigot rings, they're off centre and they vibrate at speed.

Spigot rings are good.

that is why i said spigot rings are important to locate the wheel properly

Si

When I bought my Punto it had aftermarket wheels on it with larger centre bore and no spiggot rings. The wheel bolts were tapered and I took extreme car to make sure the wheels were centred as best as poss...

It never worked.

Until I replaced the wheels for OEM, I will have changed both CV Joints, steering bushes and both lower ball joints just because the previous owner CBA
I am surprised the front subframe hadn't dropped off too

Spiggot rings are important

[Oldyellow]

Lots of info there guys and well worth taking note

I am still negotiating but gonna check if I can get the spigot rings before proceeding.

Thanks for all the help and comments

[rootes]

tis an interesting piont on the hubcentric / lugcentric issue...

cars like Pugs are hubcentric, but they still have tapered wheel bolts - suppose tolerance on taper and hub need to be good

mr2 mk1 I understand has hubcenctric wheels plus sleeve nuts - this to me makes sense as in lat case the nuts are not locating in the same why a taper does...

[Tom G]

Why dont my teardrop alloys fit the hub then?

they must have been bored out at some point?
my mk3 wheels are a tight fit.
I find the mk1 really sensitive to wheel wobble, to prevent it I need to fit the wheels carefully, tightening up the nuts bit at a time up to the right torque, before dropping.

[WeirdNeville]

Re Spigot rings.... could my car be missing them?
Basically, I had my tyres re-sealed onto the rims, and ever since I've had a bit of wheel wobble. I've assumed it was a balance problem and had the wheels re balanced twice... but the spanner monkeys have never been that careful when re-doing the wheel nuts. I assumed that the nuts held the wheels in the right place.

So should I re-do them myself uber carefully, and waht does a spigot ring look like? COuld I be missing them or would it be obvious?

[jamiesi]

spigot rings are def a must my old car didnt have them i went round a corner and my wheel fell off it ripped all 4 bolts out of the hub