Lost a nearly new tire today. Screw in shoulder cut 1" gash in sidewall from the inside.

Looking for a Michelin PS/PS2 315/25 R19.

Please let me know if you have one.

Alternatives? Yokohama? Falken?

 

You'd have a better chance of finding the holy grail than finding a PS/PS2 with that size. 315s have been on back order for months. As a rule of thumb, don't mix tire make/models on a single car so assuming you have PS or PS2 on all wheels, get a new set of rears altogether. It's a pain in the *** but what can you do. Make sure your front diameter is still a tiny bit greater than your rear diameter though if you're not familiar with that rule as well.

 

Thanks, I know, but thought I would try. The one that got punctured was one I bought here on-line 2 months ago to replace another one that developed a side wall blister. PIA. Seriously considering going back to 18's.

 

Yea I really wish this problem would be resolved already. I'm going from 18s to 19s soon and am getting mixed replies about which fitment I should go with since the 315s are MIA. Damn it

 

I also got a nail close to the edge of one of my 315/25/19 PS2.

I may end up getting a new set of tires for these wheels as I cannot find another 315/25/19. I may put the other side for sale.

 

Huh.? What rule is that?

 

I'm interested in going back to 18". What wheels do you have now? I have 19" HRE's, Black with Chrome lips. Swap?

 

PM me for details

 

Well as many of the members on this forum agree, the viscous coupling differential our 996s have require that the front tire diameter is slightly larger than the rear tire diameter. With stock set up, the front is .1" greater than the rear, as stated in the owner's manual. There's a huge thread about a few guys who learned this the hard way; they blew their diffs because their rears were larger. It's still debatable whether it takes the diff a few weeks or a few months to be damaged, but either way it is still definitely harming it.

 

Well I still disagree, Mainly because the manual does not state anything about tire diameter front and rear. It just shows the recommended tire sizes of 225/40/18 front and 295/30/18 rear. This is simply a tire size that differs between manufacturers and in some cases this combo size actually has the rear tire larger than the front such as with the Michelin Pilot sport cups and all the DOT track tires. Additionally Porsche recommends a winter setup that is 225/40/18 front and 265/35/18 rear in the manual. Every manufacturer has this combination with a larger rear tire. I think the only thing that matters is they are close in diameter. I read those threads, and while the logic makes sense, I don't think you ever see a difference with the minimal size people are discussing, unless you are driving in a perfectly straight line with no slippage of any kind and your tires all wear perfectly even for the life of the tire. We all know how evenly the TT wears its tires, don't we.

 

I had the exact same train of logic as you, until everyone on the forum still told me to beware. But what you are saying about just the front and rear being very close in size, I would have to agree. I'm just not willing to take a chance :/ I will stick to what I know is already 100% acceptable

 

I run my car all winter for the past two winters with the sizes I quoted (keep in mind those are recommended by Porsche). Never had an issue. With all due respect to everyone on here, I tend to trust the Porsche engineers and what they state in the manual with regards to tire sizes.

 

If you can't find another 315/25/19 which I doubt you will since no one seems to make them anymore, you can go with a 305/30/19 on the rear and 225/40/19 or 235/40/19 on the front. The 235/40s will probably rub a bit but nothing that is unworkable.
I didn't like the look of it at first but it quickly begins to look normal.
Recently I got som continentals in the right size but it wasn't easy to find them. I posted another thread with the vendor URL on this forum.