The Iltimate WHEEL question ....

[Mr.Cerbera]

Dear All,

First..... sorry, that should read Ultimate as I'm sure you realise
(Not a good start. Eh?)

I have read a myriad of posts and replies on Cerb wheels and have been unable to come to an understandable theme. Therefore I have photographed the 5 wheel boss indentations on the Front and Back wheels of my '01 4.5 in the hope that someone(s) can tell me what the stamps on them indicate.

There is obvious information but where or what are the details which give the offset ?

Many thanks, in advance, of any help you can give...

Mr.Confused



Qu. What does "03091" mean ?



Qu. What's the diff between e42 and e33 ?



Qu. What does "03 31" mean ?



Qu. Who is "JIL" and what does the "4" mean ?



Qu. What does "4 1" mean ?

Edited by Mr.Cerbera on Wednesday 13th January 16:34

[JensenA]

I can answer two......
E42 and E33 are the Offsets.
It's not 'JIL', it's JWL - 'Japan Light Alloy Wheel' - It's the Japanese ewuivalent of our BS, or the German TuV. It means it meets the Japanese regulations for an alloy wheel on a Car.

PS - '4 1' Means you have 4 wheels and thats one of them.

Edited by JensenA on Wednesday 13th January 17:06

[softtop]

the other thread suggest that the manufacturer is Rimstock??

[Mr.Cerbera]

JensenA said:

I can answer one......E42 and E33 are the Offsets.
It's not 'JIL', I cant remember what it is now, I'll take a stab that it's a Manufacturer!

Edited by JensenA on Wednesday 13th January 16:56

So that means that the front and rear wheels have a different offset ?

OMG

[Mr.Cerbera]

JensenA said:

I can answer two......
E42 and E33 are the Offsets.
It's not 'JIL', it's JWL - Japanese Light Alloy Wheel - It's the Japanese ewuivalent of our BS, or the German TuV. It means it meets the Japanese regulations for an alloy wheel on a Car.

Edited by JensenA on Wednesday 13th January 17:02

Cheers Alan... and the offset figures relate to a measurement that I can make or a percentage or .... ?

softtop said:

the other thread suggest that the manufacturer is Rimstock??

Hi Stuart,

Which other thread would this be ?
I checked 'Rimstock's site and they don't list 8.5 rims

Edited by Mr.Cerbera on Wednesday 13th January 17:20

[JensenA]

It's mm's - it's the 'offset' measurement in millimetres of the mounting face of the wheel, to the Vertical centre line of the wheel.

[Mr.Cerbera]

JensenA said:

It's mm's - it's the 'offset' measurement in millimetres of the mounting face of the wheel, to the Vertical centre line of the wheel.

Oooh my knees go weak at the amount of knowledge that is bouncing around in that TVR cranium of yours - TVM

[Tanguero]

8.5Jx18 H2 e42

8.5 is the nominal width between tyre beads
J is the bead profile code
18 is the rim diameter in inches
H2 is the bead seat contour code (H2 = double hump... fnar fnarr)
e is the offset in mm


ETA This might help http://www.carbibles.com/tyre_bible_pg2.html

Edited by Tanguero on Wednesday 13th January 17:38

[Mr.Cerbera]

Tanguero said:

8.5Jx18 H2 e42

8.5 is the nominal width between tyre beads
J is the bead profile code
18 is the rim diameter in inches
H2 is the bead seat contour code (H2 = double hump... fnar fnarr)
e is the offset in mm


ETA This might help http://www.carbibles.com/tyre_bible_pg2.html

Edited by Tanguero on Wednesday 13th January 17:38

Cheers Peter, absolutely brilliant site

[al 350i]

sounds like your thinking of changing something paul

whats the plan?

[softtop]

Mr.Cerbera said:

JensenA said:

I can answer two......
E42 and E33 are the Offsets.
It's not 'JIL', it's JWL - Japanese Light Alloy Wheel - It's the Japanese ewuivalent of our BS, or the German TuV. It means it meets the Japanese regulations for an alloy wheel on a Car.

Edited by JensenA on Wednesday 13th January 17:02

Cheers Alan... and the offset figures relate to a measurement that I can make or a percentage or .... ?

softtop said:

the other thread suggest that the manufacturer is Rimstock??

Hi Stuart,

Which other thread would this be ?
I checked 'Rimstock's site and they don't list 8.5 rims

Edited by Mr.Cerbera on Wednesday 13th January 17:20

it is called 'new spiders' in 'Tamora, 350 and Sag' forum

Edited by softtop on Wednesday 13th January 21:32

[Mr.Cerbera]

al 350i said:

sounds like your thinking of changing something paul

whats the plan?

Hi Alex

No, not changing. Just completely pissed-off with not being able to have any fun with the snow here so was thinking of running a spare set of wheels with snow tyres on and have found a PH'er who has a set going for a reasonable price so just wanted to know what I should be looking at in terms of specs.

[JR]

Mr.Cerbera said:

Just completely pissed-off with not being able to have any fun with the snow here so was thinking of running a spare set of wheels with snow tyres on and have found a PH'er who has a set going for a reasonable price so just wanted to know what I should be looking at in terms of specs.

In that case: Cerberas were designed for et35 wheels all round and I'm unaware that this requirement changed during the life of the vehicle. What you have may work but any new set should be as close to original spec as possible. I presume that you are looking at a set of 16" for fitting snow/wimter tyres.

[Tanguero]

They were designed with an offset of ET35 for the original a 16" or 17" rim. When change to spiders which are both taller 18" and wider you need the greater offset at the rear to avoid hitting the arch with the larger rims.

[JensenA]

The PCD of the Cerbera is 5 x 114.3. That's a fairly common fitment. If your not too bothered about looks, just go to a scrapyard and buy a set of wheels and tyres with a 5 x 114.3 PCD. 16" or 17" will do.

Use this Tyre size calculator to make sure you get wheels with the correct rolling radius, Remember if you are just after tyres for the snow, then narrow ones will actually be better.

Make a list of tyre sizes that match (near enough) the current rolling radius, and head off to the local scrapyard and take your pick.

eg If you currently have 255/35 x 18's, then a 175/65 x 16 will be fine.

[JR]

Tanguero said:

They were designed with an offset of ET35 for the original a 16" or 17" rim. When change to spiders which are both taller 18" and wider you need the greater offset at the rear to avoid hitting the arch with the larger rims.

Ah. Thank you.

[Mr.Cerbera]

softtop said:

it is called 'new spiders' in 'Tamora, 350 and Sag' forum

Thanks for that. Have gleaned more info and contacts from that thread - Cheers !!

JR said:

.....
In that case: Cerberas were designed for et35 wheels all round and I'm unaware that this requirement changed during the life of the vehicle. What you have may work but any new set should be as close to original spec as possible. I presume that you are looking at a set of 16" for fitting snow/wimter tyres.

Don't know about the previous history of Cerb suspensions' design but I LOVE what mine currently does so wasn't looking to change the current dimensions

Ermmmm, no actually. Was going to stay with 18". The only deft to product options was to go to 40% aspect.

JensenA said:

The PCD of the Cerbera is 5 x 114.3. That's a fairly common fitment. If your not too bothered about looks, just go to a scrapyard and buy a set of wheels and tyres with a 5 x 114.3 PCD. 16" or 17" will do.

Use this Tyre size calculator to make sure you get wheels with the correct rolling radius, Remember if you are just after tyres for the snow, then narrow ones will actually be better.

Make a list of tyre sizes that match (near enough) the current rolling radius, and head off to the local scrapyard and take your pick.

eg If you currently have 255/35 x 18's, then a 175/65 x 16 will be fine.

Sorry to be a poof but I'm afraid I do care about looks - otherwise I'd get a set of SP12's ()

Did I miss the 'Tyre size calculator' ??

Many thanks for suggestions and facts and figures

Sorry ETA, I know I'm dumb but if I could just confirm....
so that means an increased offset of 42mm means that the outer edge of the front rim is further from the centre line of the car than the rear rim ? (assuming that axles etc give the same starting point)
Which means that if I were to get some 35mm offsets allround then the rims of the front wheels would come further into the arches and be more likely to rub on the inside but the rears would move more to the outside and rub on the outside ??

My brian herz

Edited by Mr.Cerbera on Thursday 14th January 14:25

[JensenA]

You big poof

http://www.etyres.co.uk/tyre-size-calculator.htm

By the way, the last thing I would do is take my Cerb out in the snow with all that salt on the road

[Mr.Cerbera]

JensenA said:

You big poof

JensenA said:

http://www.etyres.co.uk/tyre-size-calculator.htm

Brill' site, shame I can't save it a a favourite

JensenA said:

By the way, the last thing I would do is take my Cerb out in the snow with all that salt on the road

Pah ! That's what high-pressure sprayers were made for

[morebeanz]

You may find it a challenge to find snow tyres in that sort of profile at that size.

It would be much better to drop down at least to 17" and a higher, but narrower profile. You'll never need the width in conditions that you'd want these tyres on anyway.

I applaud your sense of adventure driving the Cerb, by the way - with the exception of a couple of days of snow, I've been commuting in mine...