Front Differential Chewed due to incorrect wheel/tire se up
#33
TTDave, the diameter diff you have is 3.1 percent. Good luck,
but I wouldn't do it. If Porsche supplies the for the 997 then
it must be OK though. Richard, I don't know which continental
winter tire you're talking about. I don't even see one in 295/30/19.
but I wouldn't do it. If Porsche supplies the for the 997 then
it must be OK though. Richard, I don't know which continental
winter tire you're talking about. I don't even see one in 295/30/19.
#34
Which makes me wonder if the differential is ..different... in the 997. Perhaps the 997 is designed with this rotational difference taken into account!
Anyone know?
A
#36
997TT has electromagnetically controlled AWD system. 996tt has viscous fluid drive AWD. As stated above, the 996TT AWD system will not tolerate{for long} tires that are out of it's spec range.
Could someone please post the chart they use to compare the proper front and rear tire combinations for the 996TT? I would like to go wider safely.
Could someone please post the chart they use to compare the proper front and rear tire combinations for the 996TT? I would like to go wider safely.
#37
997TT has electromagnetically controlled AWD system. 996tt has viscous fluid drive AWD. As stated above, the 996TT AWD system will not tolerate{for long} tires that are out of it's spec range.
Could someone please post the chart they use to compare the proper front and rear tire combinations for the 996TT? I would like to go wider safely.
Could someone please post the chart they use to compare the proper front and rear tire combinations for the 996TT? I would like to go wider safely.
#38
Oh snap...I have the P40 HRE's with the stock 997TT size PS2's. Granted I have not driven at all since the swap due to work, but man...this thread is really alarming. Does any one know what size front PS2 would work with a rear 305 30 19 PS2? I think it would be cheaper to trade out the fronts and keep those nice big meets out back than make the rears narrower etc...anyone?
#39
+1
If you're running 235/35 fronts, I'd switch the rears to 315/25. Many here, including myself, have run this combo and have been just fine. It sucks to spend the money on new tires, but I believe it's the right thing to do.
If you're running 235/35 fronts, I'd switch the rears to 315/25. Many here, including myself, have run this combo and have been just fine. It sucks to spend the money on new tires, but I believe it's the right thing to do.
#40
Oh snap...I have the P40 HRE's with the stock 997TT size PS2's. Granted I have not driven at all since the swap due to work, but man...this thread is really alarming. Does any one know what size front PS2 would work with a rear 305 30 19 PS2? I think it would be cheaper to trade out the fronts and keep those nice big meets out back than make the rears narrower etc...anyone?
Last edited by 996TTSCAB; 10-18-2008 at 12:11 AM.
#41
997TT has electromagnetically controlled AWD system. 996tt has viscous fluid drive AWD. As stated above, the 996TT AWD system will not tolerate{for long} tires that are out of it's spec range.
Could someone please post the chart they use to compare the proper front and rear tire combinations for the 996TT? I would like to go wider safely.
Could someone please post the chart they use to compare the proper front and rear tire combinations for the 996TT? I would like to go wider safely.
Thanks for the confirmation- what is OK for the 997 is NOT for the 996.
Just go to tirerack, chose a model of tire and click on "specs"
Here is a link for the PS2:
http://www.tirerack.com/tires/Spec.j...D33YR8SPORTPS2
A
#43
Thanks for the info! These are the sizes I will go with for the front!
#44
So I did a little research and came up with two combos, that in theory, should work great with using Michelin PS2's and 19' wheels:
1)Ft 22540ZR19 OSD26.1 Revs797
Rear 30530ZR19 OSD26.3 Revs788
2)Ft 22535ZR19 OSD25.2 Revs824
Rear 31525ZR19 OSD25.2 Revs824
Going by the numbers, option number two is mathematically perfect and option one is close. Just thought this might help here...good luck! The info posted here is off of the Tirerack website and cross checked on the Michelin site with very slight variance.
1)Ft 22540ZR19 OSD26.1 Revs797
Rear 30530ZR19 OSD26.3 Revs788
2)Ft 22535ZR19 OSD25.2 Revs824
Rear 31525ZR19 OSD25.2 Revs824
Going by the numbers, option number two is mathematically perfect and option one is close. Just thought this might help here...good luck! The info posted here is off of the Tirerack website and cross checked on the Michelin site with very slight variance.
Last edited by evoviiiyou; 10-18-2008 at 06:14 PM.
#45
I still have not decided after your explanations.
I have a 997 TT wheels.
Can then be mounted to a 996 TT S cabrio?
That should put tires?
That should put spacers?
Affect the mechanics of the car?
I have a 997 TT wheels.
Can then be mounted to a 996 TT S cabrio?
That should put tires?
That should put spacers?
Affect the mechanics of the car?