I want to keep the 245s,has anyone tried the above? I have had a measure and it looks like it will fit. I herd someone near chester has them on.
I would like a confermation on the offset and any rubbing!
cheers fellas
Rob.
P.s fixed my <beep> mpg ( idle valve seized open!!)
anyone tried 8x17 et52's?
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scillyisles
- 3rd Gear
- Posts: 328
- Joined: Tue Feb 11, 2003 9:31 pm
- Location: uk
Why do you want to stick to 245 tyres? - the only tyres that were approved for the RS2 were the 245/40ZR17 Dunlop SP8000 which were an undersize tyre - if you measure them then you'll see that the section width is actually smaller than most 225/45ZR17.
The general consensus of opinion is that the RS2 handles just as well if not better on the 225/45ZR17 tyres.
With regard to changing the wheels to 8 x17 ET52 - which wheels are you thinking about as you can't just go out and put any old wheel on the RS2 - whilst the RS2 has Porsche Cup wheels from the 968 unfortunately the centre hole is not a standard Porsche size and therefore you can't put other Porsche wheels on without precision machining out the centre hole to the Audi size.
The general consensus of opinion is that the RS2 handles just as well if not better on the 225/45ZR17 tyres.
With regard to changing the wheels to 8 x17 ET52 - which wheels are you thinking about as you can't just go out and put any old wheel on the RS2 - whilst the RS2 has Porsche Cup wheels from the 968 unfortunately the centre hole is not a standard Porsche size and therefore you can't put other Porsche wheels on without precision machining out the centre hole to the Audi size.
Audi RS2 - the original
EH!
ssssssssssoooooooorrrrrrrrrrrryyyyyyyyyyyy!!!!!!!!!!!
Jesus I only asked!
I just don't like the idea of skinney 225s, 245s fit under the arches so why not have wider wheel?
RS4s are on 255s, wider is more grip in the dry!
Any way how many races have you won?
Your not preaching to the <beep> usual driver.
I have been racing sports and single seaters for the past TEN years! And I manage a race team!!!!!!!!
so no more " handles better on 225s" unconstructive shitty replies please!
Porsche have made 8x17 et52 in a cup 1,don't know which model.
So your telling me a Porsche wheel of a Porsche won't fit an RS2? If so I'll turn some spigot rings up on the lathe.
Jesus I only asked!
I just don't like the idea of skinney 225s, 245s fit under the arches so why not have wider wheel?
RS4s are on 255s, wider is more grip in the dry!
Any way how many races have you won?
Your not preaching to the <beep> usual driver.
I have been racing sports and single seaters for the past TEN years! And I manage a race team!!!!!!!!
so no more " handles better on 225s" unconstructive shitty replies please!
Porsche have made 8x17 et52 in a cup 1,don't know which model.
So your telling me a Porsche wheel of a Porsche won't fit an RS2? If so I'll turn some spigot rings up on the lathe.
Hope this is constructive enough for a race winner and a team manager 
I ran 245/35 PZeros on 8x18" ET52 and it scraped lightly in the front fender. Was very surprised as it is nominally the same width. As Cobstar mentioned, stock SP8000 245's were skinny, so a normal 245 may rub on 8".
Handling was better with them than stock 17", even better with 225/40-18. Less tramlining meant faster on the road.
I ran 245/35 PZeros on 8x18" ET52 and it scraped lightly in the front fender. Was very surprised as it is nominally the same width. As Cobstar mentioned, stock SP8000 245's were skinny, so a normal 245 may rub on 8".
Handling was better with them than stock 17", even better with 225/40-18. Less tramlining meant faster on the road.
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scillyisles
- 3rd Gear
- Posts: 328
- Joined: Tue Feb 11, 2003 9:31 pm
- Location: uk
I'm sorry that you appear to have taken my response as an insult or some sort of preaching exercise - I thought I was trying to be constructive by quoting some facts that you may or may not have been aware of :-
- the Dunlop SP8000 245/40ZR17 tyre was an undersize tyre and is not as wide as quite a few 225s - so by moving to certain 225 tyres your tyre width will actually increase/stay the same as your current SP8000s.
- the centre holes on the RS2 are 73.1mm not the standard 71.6mm that Porsche use so you'll have to get the centre holes machined out.
- proper 245 tyres will as you say have better grip in the dry but will be more prone to aquaplane in the wet and tramline more.
- the Dunlop SP8000 245/40ZR17 tyre was an undersize tyre and is not as wide as quite a few 225s - so by moving to certain 225 tyres your tyre width will actually increase/stay the same as your current SP8000s.
- the centre holes on the RS2 are 73.1mm not the standard 71.6mm that Porsche use so you'll have to get the centre holes machined out.
- proper 245 tyres will as you say have better grip in the dry but will be more prone to aquaplane in the wet and tramline more.
Audi RS2 - the original
Hi Rob
Scillyisles was trying to be helpful. If you do a search on this site, at least one person has had a very nasty experience with the wrong size tyre on the RS2. Fortunately it wasn't fatal but it could potentially have been. I was lucky mine punctured as I pulled off a road to go up to a farmyard.
Only driven mine on the road. There is more understeer with the narrower Michelin Pilot Sports 225/45ZR17 on, but less tramlining, and the tyre's don't need reinflating weekly!
Scillyisles was trying to be helpful. If you do a search on this site, at least one person has had a very nasty experience with the wrong size tyre on the RS2. Fortunately it wasn't fatal but it could potentially have been. I was lucky mine punctured as I pulled off a road to go up to a farmyard.
Only driven mine on the road. There is more understeer with the narrower Michelin Pilot Sports 225/45ZR17 on, but less tramlining, and the tyre's don't need reinflating weekly!
cheers cobster,
scillyilsles just rubbed me the wrong way, yes the cars are great but I do like to experement a bit with the standard cars, If an owner wants to try something differant than standard then have a go!most Audis understeer thats the safe factory setup,I will endevour to change mine to a more neutral to oversteer setup,mostly changing the castor and camber.
I've sussed the 8x17 et52 its the rear from a 964.I am looking hard to find some.
Thanks for the info
scillyilsles just rubbed me the wrong way, yes the cars are great but I do like to experement a bit with the standard cars, If an owner wants to try something differant than standard then have a go!most Audis understeer thats the safe factory setup,I will endevour to change mine to a more neutral to oversteer setup,mostly changing the castor and camber.
I've sussed the 8x17 et52 its the rear from a 964.I am looking hard to find some.
Thanks for the info
Might be the front from a 968 CS as well - I don't have the size to hand. Could have been that they were 8.5 now I think of it.
Remember not to confuse outright grip with handling. I run 18's on my cab because they look good, and with 225/265 tyres front/rear in place of 205/225 it originally had it has more grip, but it handled better on the standard size. That's largely due to unspring weight, but it's also about balance, comunication and how the eventual breakaway actually happens on a road car. You can have loads of grip in a car that will spit you off the road backwards as soon as you exceed it and not be able to get near a car with much less grip that tells its driver what it's doing and breaks away progressively.
Remember not to confuse outright grip with handling. I run 18's on my cab because they look good, and with 225/265 tyres front/rear in place of 205/225 it originally had it has more grip, but it handled better on the standard size. That's largely due to unspring weight, but it's also about balance, comunication and how the eventual breakaway actually happens on a road car. You can have loads of grip in a car that will spit you off the road backwards as soon as you exceed it and not be able to get near a car with much less grip that tells its driver what it's doing and breaks away progressively.
Fen
'03 RS6 Avant in ebony black/grey leather, black optics, solar roof, dippy & foldy mirrors, RNS-E, Bluetooth, West Tuned SOLD
'03 RS6 Avant in ebony black/grey leather, black optics, solar roof, dippy & foldy mirrors, RNS-E, Bluetooth, West Tuned SOLD
Hi Rob.
It was me that nearly copped it on the M40 cos of 245's, have a read of 'some info for you'. Like you have said, I you could fit 245's on the larger rim which would get rid of sidewall stress on the tyre. That would leave you with a clearance problem, I had about 4mm between the inside front tyre walls and the steering arm. You could probably squeeze them in and improve clearances with spacers etc but you would need to keep a very close eye on tyre pressures. Im running 225s on the road and cannot notice a difference between corner speeds. Let us know how you get on.
PS. Nearly all custom wheel suppliers will have a wheel that fits.
It was me that nearly copped it on the M40 cos of 245's, have a read of 'some info for you'. Like you have said, I you could fit 245's on the larger rim which would get rid of sidewall stress on the tyre. That would leave you with a clearance problem, I had about 4mm between the inside front tyre walls and the steering arm. You could probably squeeze them in and improve clearances with spacers etc but you would need to keep a very close eye on tyre pressures. Im running 225s on the road and cannot notice a difference between corner speeds. Let us know how you get on.
PS. Nearly all custom wheel suppliers will have a wheel that fits.
You can find Speedline rims (original Porsche supplier at the time) in the following dimensions:
7.5 x 17" ET 52 (corresponding to the front for Porsche)
or 9" x 17" ET 55 (corresponding to the rear)
On my RS2 I have the 9"x17" with 245 tyres, of course you need to resize the center hole to 73 mm and in front you need to use spacers of 5 mm.
7.5 x 17" ET 52 (corresponding to the front for Porsche)
or 9" x 17" ET 55 (corresponding to the rear)
On my RS2 I have the 9"x17" with 245 tyres, of course you need to resize the center hole to 73 mm and in front you need to use spacers of 5 mm.
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