[quote=S4corrado996TT;3483987]You may be right, I am not sure. However, since I had GT 2 bumper, and all four GT2 fender liners first and then upgraded to 19" rims, I don't experience the same problem like you!

I think upgrading the rear fender liners to GT2 and running 305/30/19 might be the best move here for all of us who no longer have 315/25/19 tires as an option. (Obviously, changing from 315/25 to 305/30 rears requires new front tires to accompany them as previously discussed)

What parts are required for the GT2 rear fender liner conversion? S4corrado, did you do it yourself? It looks like there are 2 sections to the rear fender liners, plus the bracket that holds the IC may be different...

 

[quote=Thales;3484510]You don't need to upgrade the fender liners to GT2 to run 305/30/19 but I would be interested in running a 325/30 which if you're running 997 GT2 19 x 12 wheels I would assume you need GT2 fender liners. If anyone has done this fender swap, can you provide the part numbers of what was changed out.

TIA.

 

I ran 245/35 up front for a while but the success will likely depend on the offset of the wheel.

 

I have upgraded GT2 fender liners along with GT2 bumper converison 5 or 6 years ago by my body shop. I don't remember how many parts were involved for fender liner conversion because there were so many parts involved not just fender liners such as air intake ducts front, left and right, bumper, bumper grills, water hoses......etc.

However, if you just want to accommdate 305/30/19 tires you may not need to buy GT2 fender liners. More aggressive alignment may do the job to avoid rubbing issue of your liner as long as your tire will not contact your metal parts of fender.


BTW I have checked out those GT2 liner part number for you as the following:
996 504 573 90 wheel housing rear /Left/V
996 504 574 90 wheel housing rear /Right/V
996 504 623 90 wheel housing /Left/H
996 504 624 90 wheel housing/Right/H
996 575 231 30 air duct/L
996 575 232 30 air duct/R

If you still want to do the conversion, I hope it will be helpful!

 

Yes! You are right! I lavished those liners on what I heard from my parts specilalist who said it's better to get GT2 liner while converting bumper to GT2s' to avoid fitment problem.............etc. So.......
However, if you want to put 325/30 into your car, those GT2 liner may become necessary!

I have put those answers to previous Thales's reply!






What wheel do you use and what is the offset of your wheel? I have 19" Champion RS97 8.5j/ F & 11.5J /R for my car. I don't know what offset it is?

 

how do the new liners give you more clearance? my intercooler hoses are right against the liners... I actually toasted an intercooler pipe running 305/30/19s

 

A question for all you guys running the nitto Invo's. I just replaced the worn out contisports (bad alignment) on the rears with same numerical size (315/25/19) Invos. Using the listed tire dimensions and advertised Revs per mile for my specific tire combination, the math said the revs per mile were within 2 or 3% (I forget which) of the front contisports (showing very little wear). After a quick trip down the street with the new tires installed, it was evident the psm and abs didn't agree with the math. Now I'm back on stock wheels and tires and all is good. The stock 18's and PSS10's really make a smooth ride.

However, those that are running the 315/25/19 Invos on the rear - what are you running on the front? The conti's only have a couple thousand miles on them so I hate to replace them but that may be my only option. If I'm going to do that I want to make sure I use a proven combo. Any help is appreciated.

And if anybody needs a set of 235/35/19" conti's for the front, I may have a gently used set available soon!

 

I ran into a similar issue mixing Pirelli on the front with Toyo (RIP) on the rear. For me I was certain it was difference in adhesion kicking off the PSM.

 

Just spoke with Michelin today directly at 866-866-6605 and they said there is no plan to discontinue the 315/25/19 PS2 even though it's a fairly narrow market. They currently show these tires in stock. Don't know about other manufacturers but the PS2 is available and probably the best tire in this size anyway. I'm not sure where the rumor and paranoia got started....

 

Who did you speak to? Ive been told directly by michelin,( not the customer service line ) that while this is an active part number there is no stock of these, and also no production date for this size to be made again currently.

You can also see this by calling all the major suppliers and asking for the 315/25 Michelin, they have 0 in stock and do not know when they will get any.


But I hope you are right!

 

The number listed in my post above is from the michelinman.com website. I talked to them only a few hours ago. The only thing I can tell you it to call that number and verify for yourself. I was just relating what they told me. They looked up the tire size on their system and cross referenced it to the correct part number I gave them for the 315/25/19 PS2. They make them, they have them in stock, and there is no plan to discontinue them is what I was told.

 

I'm currently running 315/25/19 Invos with 235/35/19 Toyo Proxes T1R. No problems.

 

I just called that number today and they told me its on national backorder! What gives!

She also stated that they can only see 4 weeks out in production range though. Bah.

 

i just bought some 305/25/19 tires, i think thats going to be close enough. Pirelli P-zero rossos, on ebay band new for $369 shipped per pair.

 

I don't know anything about those tires - but thats a seriously good price. Must be d/c because they don't list that size on the Pirelli website. One company lists the diameter at 25" - so if thats right - its a steal of a buy.

Making me reconsider ordering the PS2's at $2000 all the way around.