18 inch Rims
- Thread starter Guest
- Start date
Probably, but it depends on the size and offset. I run 9x18 on the front with an ET52 offset and 10x18 rears with ET47 (I think).
You should also be aware that Porsche released a technical bulletin in 1993 stating that 944's should never have 18" wheels fitted because it causes too much stress to the suspension components. Personally I think it's just backside covering in case a lawsuit was ever brought against them (probably in the US) because there isn't a lot of difference between late 944 and 968 suspension and it only covered the 944. It's only right you know about it before you decide to fit them, though.
In any case they look good but spoil the poise and feel of the car. If you do go for them then I think it's worth having 968 castor mounts fitted to better locate the back of the front arms.
The last thing to consider is arch clearance. My '89 S2 coupe had to have its arch rolled on the rear nearside (that's where it will touch first because the body is not square on the car on any 944 I've looked at) but my '90 Turbo and my '92 S2 Cab both have rolled rear arches from the factory.
You should also be aware that Porsche released a technical bulletin in 1993 stating that 944's should never have 18" wheels fitted because it causes too much stress to the suspension components. Personally I think it's just backside covering in case a lawsuit was ever brought against them (probably in the US) because there isn't a lot of difference between late 944 and 968 suspension and it only covered the 944. It's only right you know about it before you decide to fit them, though.
In any case they look good but spoil the poise and feel of the car. If you do go for them then I think it's worth having 968 castor mounts fitted to better locate the back of the front arms.
The last thing to consider is arch clearance. My '89 S2 coupe had to have its arch rolled on the rear nearside (that's where it will touch first because the body is not square on the car on any 944 I've looked at) but my '90 Turbo and my '92 S2 Cab both have rolled rear arches from the factory.
Guest
New member
Useful link except, it states offets are 25?
From a previous thread I have
front
7inch with offeset ET55 205/50 zr17
7.5inch with offset 225/45 zr17
rear
8.5inch with offset ET50 255/40 zr17
9inch with offset ET55 255/40 zr17
I've got absolutley no idea what I've just written, some kind of magic. It alll seems to be a black art.
I saw some nice 17's at the autojumble, all I had to do was to add 7mm shims on front.
On e-bay 993 wheels etc etc , ask if they fit they say 'yes'.
I might just refurbish mine, unless someone can spill the beans and write the bible of 'wheels'
I recently attended a service clinic, the tech. turned his nose up at at fitting 968 castors, whereas some guys on here recommended you do so.
This is written from a totally unknowing point of view( I only know about pretty things) and would like to know the rule of thumb.
I would like to fit either 17's or 18's on a '89 s2. what is the right wheel's etc
I'm sure this is a faq everyone wants to know.
Is there somewhere we can look, or can this forum provide suchlike which would be of use, along with 'how many miles you do a year'
From a previous thread I have
front
7inch with offeset ET55 205/50 zr17
7.5inch with offset 225/45 zr17
rear
8.5inch with offset ET50 255/40 zr17
9inch with offset ET55 255/40 zr17
I've got absolutley no idea what I've just written, some kind of magic. It alll seems to be a black art.
I saw some nice 17's at the autojumble, all I had to do was to add 7mm shims on front.
On e-bay 993 wheels etc etc , ask if they fit they say 'yes'.
I might just refurbish mine, unless someone can spill the beans and write the bible of 'wheels'
I recently attended a service clinic, the tech. turned his nose up at at fitting 968 castors, whereas some guys on here recommended you do so.
This is written from a totally unknowing point of view( I only know about pretty things) and would like to know the rule of thumb.
I would like to fit either 17's or 18's on a '89 s2. what is the right wheel's etc
I'm sure this is a faq everyone wants to know.
Is there somewhere we can look, or can this forum provide suchlike which would be of use, along with 'how many miles you do a year'
Guest
New member
Thank you all for the info this was very helpfull, albeit I am still not sure??????
I think from the data available and the links I will stay with a new set of 17" cup wheels. What ever the outcome the car is fantastic and the new wheels will make it even more so!
Great, Thanks Very Very Much.
The Porsche gang alway together.
Keith
I think from the data available and the links I will stay with a new set of 17" cup wheels. What ever the outcome the car is fantastic and the new wheels will make it even more so!
Great, Thanks Very Very Much.
The Porsche gang alway together.
Keith
Guest
New member
I would love to find a clear and concise FAQ on that very subject, also to include brakes and hubs as the three are totally interrelated.
As for 968 Castor mounts it's the right way to go from everything I've ever read. The 944 was not available with 17" wheels but the 968 was as an option, hence the reenforced mounts (might be wrong here but everything I've found out about it suggests that's the case)
I recently read a thread on Titanic where Philip Shand from Aberdeen fitted 968 castor mounts to his 91 Turbo, he had 18" wheels and had not been happy with the handling, he reported that it was much improved after fitting the 968 mounts.
Cost of mounts is about £40.00 each I believe plus fitting plus wheel alignment charge after having them fitted.
Tim.
eastendr
New member
I'll be able to give you more detail later (main computer's backing up at the moment.
Front 8.5 x 18 ET52 (just need to check this one)
Rear 10 x 18 ET65
I think Porsche started rolling arches from 1988 (bert ?) since my '87 944S isn't rolled (but will soon be as it catches the NSR with the D90's from the Turbot), but my 1990 Turbot is.
You will find that suspension is much more critical with 18". Most Porsche 18" run 265 at the rear, but mine has later 285 profile Pirelli Rosso's. After a bit of experimentation, I run 1.5 degrees negative camber all round. This seems to work very well. Make sure you get the geometry set up correctly or you will get unpredictable handling and (expensive) tyre wear.
I'm NOT running 968 castor mounts at the moment, but am happy with the setup after tweaking the geometry and M030 settings. You might consider a strut brace with 18" (low profile wide rubber) to keep flexing and contact patch under control.
More information of my settings etc on my web site
Specifications
Description
Don't forget that with 18" rims, you can move up to decent brakes [
][]. Although I'm on Big reds / 322mm discs at the moment because it's an easy / cheap conversion, when the engine's sorted I'll probably move to my (preferred) AP setup.
Front 8.5 x 18 ET52 (just need to check this one)
Rear 10 x 18 ET65
I think Porsche started rolling arches from 1988 (bert ?) since my '87 944S isn't rolled (but will soon be as it catches the NSR with the D90's from the Turbot), but my 1990 Turbot is.
You will find that suspension is much more critical with 18". Most Porsche 18" run 265 at the rear, but mine has later 285 profile Pirelli Rosso's. After a bit of experimentation, I run 1.5 degrees negative camber all round. This seems to work very well. Make sure you get the geometry set up correctly or you will get unpredictable handling and (expensive) tyre wear.
I'm NOT running 968 castor mounts at the moment, but am happy with the setup after tweaking the geometry and M030 settings. You might consider a strut brace with 18" (low profile wide rubber) to keep flexing and contact patch under control.
More information of my settings etc on my web site
Specifications
Description
Don't forget that with 18" rims, you can move up to decent brakes [
][]. Although I'm on Big reds / 322mm discs at the moment because it's an easy / cheap conversion, when the engine's sorted I'll probably move to my (preferred) AP setup.
Guest
New member
Guys,
Thanks very much, after all the data and to someone new to this game the data sound difflecult, what i do understand is that they will fit but i should take care on the offset. The rims are up for £220 plus conti tyres (7mm all round) with no marks like mint, which sound like a good deal but if they don't fit then I have a expensive door stop for my garage!!!!![][][]
Best regards to you all.
Keith
Thanks very much, after all the data and to someone new to this game the data sound difflecult, what i do understand is that they will fit but i should take care on the offset. The rims are up for £220 plus conti tyres (7mm all round) with no marks like mint, which sound like a good deal but if they don't fit then I have a expensive door stop for my garage!!!!![
][][]Best regards to you all.
Keith
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