PorschePRH

Have you driven the 997? Its a true supercar with the smoothness of a VW golf and the efficiency of a race car! They did it right!

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Can the shocks and springs be adapted to a 03 C2 so I can have a smooth ride?

The manual shows a 265/35/18 on a 10" rim for the snow tires. That's actually the size I have on my car because that's what the previous owner had on there. I also have a 225/40/18 on a slightly larger (8.5") rim on the front. I like the look of the slightly rounded tire because it's like the Viper I just sold.

Here's a pic...

With that said, I think that both 275/35/18 and 295/30/18 are viable options. But the sidewalls will be in a little on 275 and out on 295 compared to the 285. For reference, 10mm different on the tire width translates to 0.39". The speedo will be affected slightly because the overall diameters are different:

265/35 = 25.30" total diameter (2.3% less rotations)

285/30 = 24.73" total diameter (current size)

275/35 = 25.58" total diameter (3.4% less rotations)

295/30 = 24.96" total diameter (0.9% less rotations)

At least that's what I calculate...

What was your final solution?

I have 265's on my 10 inch rim and it looks small on the rim, but in an ok way. If it was an 11 inch rim, I can not believe that it would work...

Unless you have the 63ET wheels why would you want to run the 295 rubber?  For the 65ET run the 285 or 265 rubber.

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Isn't the lower ET mean that the wheel will stick out more and be more likely to rub? So a 65ET is the better bet here with 295's as opposed to the 63? Assuming the rub concern is on the inside of the wheel and not the outside....

I am having my wheel flanges machined down 5-7mm as we speak for $35 a wheel. So if you are worried about the outside rubbing, that could be your low cost option to get them to fit. If it's the inside, buy a small spacer like the one Porsche puts on certain models.

Are the GHL or PSE people having any of the resonances? This is the first I have heard of any undesireable noises from Fabspeed, and now I am worried about buying a set....

I have a tip, which means most of the time I will not control the RPMs. The tip likes to have the RPM's around 2K, so if that's where the resonance is in a system, I would have to remove it...

My 03 manual shows summer tires as 285/30 and snow tires as 265/35 on the same rim....So that must mean you can go either way...

Just speculating that it could have been a supplier issue...Either on the tire or wheel side....

You can do a few checks:

1) Rev the engine and see how the voltage gauge behaves. Even if the battery is on it's way out, cars normally read between 13 and 14 volts when the alternator is going full blast. If not, the alternator or the voltage regulator could be having a problem.

2) Charge the battery with a wall charger overnight. If the car starts and runs fine for days and then starts to fade again, you probably have a charging problem, not a battery problem.

3) Take the battery out and take it to a parts store that can test the battery for you.

With a 4 year old car, it's probably the battery if it's the original battery. The alternator/regulators normally last longer than 4 years...

We are talking about .68" in this case, which considering this is a street car with tip, I doubt I will notice.

I saw some pics of cars with up to 1.18" more outward on a narrow body and it looked ok from the pics. That's a lot though. I wouldn't mind doing some shaving to get the difference down below .5"...

Looks like the wheels may work afterall. I got a message from someone using these exact wheels on their 911 narrow body. He says they don't rub and look good. Someone suggested I could shave some of the hub from the wheel to fine tune the fit... Not sure about that...

I am good friends with the search already, but I am not sure I'm interpreting the posts correctly.

Some people seem to be putting spacers on their wheels. I have seen people talking about spacers of 15MM up to 21MM on the rears. But I don't know what they were starting with in terms of wheel width and offset.

I talked to someone today about powder coating the calipers and he said that the do it yourself paint kits are better because they use high temperature paint (and they are cheap). I checked into it and you can get the paint in any color @ 

http://www.departstop.com/Brake%20kits.htm

and if you want the stickers, you can get them at

http://www.renntech.org/forums/index.php?a...re&code=caliper

Jarrod

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I used that paint on a 2000 Corvette C5 to make the calipers red. I will say that the paint is very durable and did not fade at all. However, the paint is put on with a brush and it's very thick (it dries quickly which means you have to work quickly and it will get thicker before you can finish all 4 brakes). This was fine for the Corvette because the calipers had a very rough finish on the metal of the calipers and it hid the less than perfect paint job. But the Porsche calipers are smooth and will show all the brush strokes and variances in paint thickness. So I don't think it will look as good.

But it might be worth a try before going the powder coat method if you are a skillful paint brusher, because it's cheap and can be done without removing anything but the wheel and masking the rest off. If it doesn't look good, just send them off to be blasted clean anyway since that's most likely what they were going to do to the original black paint anyway.

I'm looking to get some new wheels with the following spec's:

Size (front) 18 x 8.5

Size (rear) 18 x 10

Offset 52MM-F, 48MM-R

I have a 03 C2 Coupe with the 030 sport chassis option...

A 48MM rear offset looks about 17MM less than the stock Turbo Look 2 18's that I have on the car.

Is this reasonable? Will it look odd or rub?

I was planning on using the current tires which are 225/40 and 265/35. Will these look ok on those rims?

Here's a pic of the car with it's stock rims. Doesn't really look like I would have room for less offset, but then I'm new to this...

Thanks in advance!

PRH