928Myles

http://www.trademe.co.nz/Browse/List...x?id=192588263

Can anyone tell me if these rims will fit my 1990 928 S4. I am looking at them for running winter tyres & possibly chains on occasion. I have tried useing one of the tyre calculators on rennlist (creators name escapes me at the moment) to get the measurements he gave. It looks like they will fit but need to be sure before I buy.

Cheers,
Myles

RyanPerrella

i wanna say C2 wheels of that vintage are 6" front and 7" rear and not exactly ideal for the 928

maybe they are 7" and 8" but still they arent very wide, i would look for other wheels at that price.

Regardless 205 is too narrow for the fronts, you should have 225's plus and 245's for the rear at the very least.

Hilton

Hi Myles, they look like C2 Design 90's? The 964 has 16x6 and 16x8 front and rear, with 52mm offset at both ends. It will fit, although you should check with the seller to make sure the numbers by the filler valve confirm those offsets.

The 52mm front offset is a bit lower than most prefer - it may rub slightly at full lock (a problem if you have chains on!).

You might also want to see if you can track down some 928S wheels with the 65mm offset - should be available for similar money.

Mrmerlin

remember in the snow narrow tires will get better traction with or without chains .
Also to note that the reason the rear wheels on the OB cars look sucked into the fenders is so chains can be fitted and not damage the bodywork

jon928se

8.5" ET52 with 265/30/18 on the rear leaves a gap of approx 15mm to the fender. 8" rim won't change that much but fitting a 225/50/16 on a 16" dia 8" wide ET52 rim should increase that gap to about 35mm - surely enough for chains.

Edit

A 8" front with ET60 and a 225/50/16 tyre is starting to close up the tolerances (was fitted to 88and 89CS/SE/GT) and probably not recommended for chains - drivers manual doesn't seem to say on a very quick look . A 6" wheel with ET 52 puts the edge (or the centre) of the tyre 8mm further out. With a 205/50/16 tyre this moves it back in by 10mm - it could work - Anyone know what the winter wheel offsets are ?

Vilhuer

In '87-88 S4 7x16 ET52 all around and in '89-91 7x16 ET65 in front and 8x16 ET52.3 in rear. Almost exact same as stock wheels. Only difference is that these wheels are much better protected against salt etc.

Ian928

What is it with chains? When we drove in California last year you were not allowed to drive into the mountains without chains. Here in Norway we get a lot of snow and only tourist use chains. I can't remember once I have seen a Norwegian with chains on his car.

There are a lot of good non-studded winter tyres that will work for winter driving. I have driven my 928 two winters through snowstorms, over mountains and on ice with winter tires without major problems.

Errka, how about Finns, do you use chains?

dr bob

Most Californians live in the coastal desert areas where the worst weather we see is a sprinkling of rain. We drive on summer tires year round because, well, it's summer here year round. A drive to the local mountains exposes warm-weather flat-land drivers to conditions they've likely never experienced. So chains are required at certain times.

I have owned homes in California mountain areas, and noticed an interesting practice. In Mammoth Lakes for instance, we could drive without chains in 6" of new snow between Monday after lunch and Friday lunch. Between Friday lunch and Monday lunch, even a dusting of snow or a hint of ice would bring out the chain requirements, obviously just for the weekend tourists. Our biggest concern was weekend driving, sharing with flatlanders with big SUV's with 4-wheel drive. They didn't need to drive with chains most of the time, so they would blast around thinking that 4WD made them immune from the laws of physics applying to inertia and friction. Surprise!

So in my opinion, chain requirements are a good thing in most places in California. With serious snow driving experience, you may not see the need here, but you are a very tiny minority here. I learned to drive in an area of the country where snow is common, and think I know my limitations. I hope that chains will help others manage their vehicles well enough to get around without sliding into things like me or my car.

Vilhuer

In here chains are virtually non existent. Many people use studded tires instead and chains aren't even legal unless conditions are really bad anyway. Most people haven't even seen chains and wouldn't have slightest idea how to put them on.

One reason to use chains in central Europe for example is their M+S tires. They are totally different compared to ones which are sold in nordic countries and much worse in really bad weather. As there can easily be 20 celcius and free speed limits in autobahns people in south need higher speed rated tires and this means they have to be designed for more summer like weather. Ours will practically melt away in warm weather and high speeds and they are usually limited to 100mph.

Ian928

In Norway everybody has two sets of wheels, one with snow tires and one with summer tires. Our law say that the car should have proper tires for winter driving when needed. That means you will get a fine and probably have to pay for any damage caused on other cars or people. You are only allowed to use studded tires between certain dates and in special cases like driving in the mountains.

What I found strange was that you HAD to use/bring chains in California. Snow tires was not even an option it seems.

And, of course, the roads in parts of the world where it seldom snows is just not made for snow! We visited relatives in Ashland, Oregon, and never would someone in Norway put a road straight up the hillside like the ones we saw in Ashland. There was a snowstorm just after we arrived there, and I did not dare take the car out on those steep roads. But a lot of others did, to our shock and sometimes amusement The most common cars in the snow seemed to be Pick-up trucks with chains only on the rear wheels. So, they got up alright, but with no traction on the front they locked up and could not turn when going back down.

I have never seen anything like it, Tree branches falling down on top of cars, people with full throttle sliding backwards, schools closed. And this because of 10 inches of snow!

928Myles

Thanks for the replies. In NZ studded tyres are illegal & the police often won't allow any vehicle with out chains on a snowy road (even a 4WD). I intend to fit the rims for winter running (snow can fall on many roads around here from April to November) and carry chains 'just in case'.

I have 275/40/17 on the rears now so no room for chains.

Regards,
Myles

Ian928

You don't need studs to drive on snow! There are a lot of tires intended for winter driving without studs. My girlfriend has these on her Porsche 951 and she drives all winter: http://www.conti-online.com/generato...tact_5_no.html

I can see that when I choose other countries than Norway (for instance USA) on the Continental site it do not list these real winter tires, only "semi-winter" tires! I do not understand why?

Vilhuer

Because stupid people would get themselves killed with them by driving too fast on warm conditions. They really do not last long in +20 celcius at 100mph. Drive like that from one end of Germany to another and you don't have any rubber left.