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Porsche 911 Tires and Wheels

37 messages,  Last post on Aug 15, 2009 at 8:29 AM

You are in the Porsche 911 Forum. Your Host is claires

What is this discussion about? Porsche 911, Tires, Coupe, Convertible


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#5 of 37
Re: tire wear [habitat1] by mikejg
Mar 12, 2007 (4:41 am)
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Replying to: habitat1 (Mar 09, 2007 4:45 am)

Guys
 
I am not sure where you drive your Carrera 2s or on what tires, but mine used to do 6k miles on the back and 20k on the front with Continentals. In an attempt to stem the money drain, I have switched to Bridgestones and I might get 10k on the back. I can tell no difference at all on the wet or dry handling or ride. Anybody got any better ideas?
#6 of 37
Re: tire wear [mikejg] by hotrod81
Mar 12, 2007 (3:04 pm)
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Replying to: mikejg (Mar 12, 2007 4:41 am)

My 2006 C2S has pzeros, and with 5000 miles, they hardly look worn at all. Should have a better idea as to how they hold up sometime this summer.
#7 of 37
Re: tire wear [mikejg] by habitat1
Mar 13, 2007 (3:42 am)
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Replying to: mikejg (Mar 12, 2007 4:41 am)

I rechecked my rear tires over the weekend with the highly sophisticated, "stick your fingers in the grooves" method of gauging tread depth. I have the original Pirelli P-Zero's (235/35 front, 295/30 rear) with 12,400 miles.
 
The good news is that I have what appears to be very even tire wear. No difference in depth inside vs outside edges and both rears were the same. However, they are definitely more worn, with shallower tread than the fronts (est. 1/4" for rears, 3/8" for fronts), and my optimism that they would last another 5-7k+ miles may have been premature.
 
When I get a chance in the next few days, I'll take the car to the local dealer - one of the service techs is a "track" guy - and see what he thinks. My guess is new tires will be needed at 15k+/- miles if I don't want to milk them past optimum performance.
 
Obviously, how you drive your car makes a huge difference in tire life. My 12k+ miles have been pretty easy - no track time, a little "enthusiastic" driving, 60% highway miles on fair to good roads.
#8 of 37
Re: tire wear [habitat1] by fedlawman
Mar 13, 2007 (3:23 pm)
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Replying to: habitat1 (Mar 13, 2007 3:42 am)

"My 12k+ miles have been pretty easy - no track time, a little "enthusiastic" driving, 60% highway miles on fair to good roads."
 
Can I have your cab when you're done with it?
#9 of 37
Re: tire wear [fedlawman] by habitat1
Mar 13, 2007 (5:04 pm)
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Replying to: fedlawman (Mar 13, 2007 3:23 pm)

"Can I have your cab when you're done with it?"
 
How about next week?
 
I went to my Porsche dealer today to have the service manager look at the tires and he now claims the rears are ready to be replaced. Pretty odd that, at 10,711 miles (oil change/service) they "look great with lots of tread life left" and now at 12,415 miles they "should be replaced as soon as possible". Sounds fishy, but unfortunately, I think the current assessment may be correct. I'm going to try getting a qualified second opinion from someone that doesn't sell tires. After giving me the bad news on the rears, he did say the fronts "look good with lots of tread life left".
 
In any event, while I was waiting for them to put it up on the rack, I checked out two unsold 911 Turbos they have in stock. GT Silver and Slate Grey, both 6-speeds, with $131,000 to $133,000 stickers. We hit 75 degrees here today, so neither of them looked quite as good as my Cab S with the top down, but they are tempting.
 
If anyone is looking to "trade up", check out Rockville Porsche. The salesman said they weren't discounting them as they were "extra" allocations from Porsche, but that's the same thing they said in August 2005 when I was Cab S shopping. A little sidebar with the Sales Manager reminding him that I bought from another dealer 50 miles away at a $10,000+ discount in September 2005 ought to loosen them up a bit.
#10 of 37
Re: tire wear [habitat1] by fedlawman
Mar 13, 2007 (6:54 pm)
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Replying to: habitat1 (Mar 13, 2007 5:04 pm)

"How about next week?"
 
I was hoping for a little more depreciation. 2 years from next week should work.
#11 of 37
Re: tire wear [fedlawman] by kyfdx HOST
Mar 13, 2007 (6:57 pm)
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Replying to: fedlawman (Mar 13, 2007 6:54 pm)

Hmmm... I saw a '99 911 for $28K the other day...
 
Guess I'll be ready in about six more years... Maybe about the time you are done with it, fedlawman..
#12 of 37
Tire Question by habitat1
Mar 14, 2007 (12:56 pm)
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I have been told by Tire Rack and my Porsche dealer that the OEM Pirelli P-Zero Rosso 19" 295/30 (N rated for Porsche) rear tires for my 911S Cab are completely out of stock and on back order. There is no word from Pirelli as to when they will be available.
 
Replacing just the rear tires with Michelin or another brand is not recommended, unless you replace all four tires. Given that my fronts are only about 50% worn, I don't want to throw them out.
 
Has anyone run into this issue and/or considered replacing the rears with 305/30's (standard on the Carerra S4)? Apparantly they are in stock, albeit in low supply.
#13 of 37
Re: tire wear [habitat1] by designman
Mar 14, 2007 (3:41 pm)
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Replying to: habitat1 (Mar 13, 2007 5:04 pm)

You need to look at the inside tread and shoulder. I’m not sure about this but I think the rear tires on Porsches have some toe-out which means the inside edges wear much faster. This is in addition to the negative camber. Your tire wear is not inconsistent with what I have heard. However I suggest taking a close look at the inside edges. Did he point out the area of wear when it was on the rack?
 
With regard to the 997 Turbo, here are some anecdotal notes. Last week I was stopped at a highway gas station and a gent pulled up in a 993 Turbo. I chatted with him and he told me he had a 997 Turbo but didn't like it and dumped it. Recently I had my Boxster in for service and noticed two used 997 Turbos on the showroom floor. I am not suggesting anything other than my outlook is to be vigilant with all new models. You can take a considerable hit on them. It happened with the 996 Turbo and 996 GT3.
#14 of 37
Re: Tire Question [habitat1] by designman
Mar 14, 2007 (4:22 pm)
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Replying to: habitat1 (Mar 14, 2007 12:56 pm)

Replacing just the rear tires with Michelin or another brand is not recommended, unless you replace all four tires.
 
Do what you want but I'd have no problem replacing front and rear with different brands. The logic is to keep symmetry on the axle. Plenty of people do what you are considering when switching brands. Front-to-rear is asymmetrical to begin with when you consider the front/rear differences in tire sizes, suspension settings and wheel angles.

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