Is there a recommendation for tire pressure for the Bridgestone tires front 265/40-18 Porche N1 and rear 345/35-19 Scuderia. Should be any differant than the door decal recommended 32 psig?
Bridgestone Tire Pressure?
- Thread starter partssmann
- Start date
RPM217
2005 white/blue stripe
FelixIbizaSwitzerland
GT Owner
The decal in your door is for the goodyears fitted when you got the car new, you are asking tire pressures, ask BRIDGESTONE TYREDEALERS, or better BRIDGESTONE OF NORTH AMERICA, if this company exists.
I personally use those tires from B. on my 2005 (European 101-car) GT as well, but it's difficult to tell, my actual mileage is above 35000 miles now
A) do you drive the car often ?
B) do you drive in rather rural area, that means outside of villages/towns
C) do you drive your car alone
D) do you drive a lot in big city's in your state
E) do you drive only in dry conditions
F) do you drive on racing tracks with those tyres
for each of those 6 different possibilities you will get different answers, from every other driver.
A bit you have to find out by yourself, if the rears are to hard, they wear out in the middle of the tyre.
With the rears, i had one of the first set's of them ruined on a weekend, on a rough tarmac on a european race track, but driving only on european motorways, similar to your US Interstates i did do now 15000 miles with a set of rears, but usually 3500-4000 miles if i do drive much in big cities an driving in the swiss alpine roads, with hundreds of thight turns and as well changing surfaces, concrete, asphalt, tarmac, cobblestones.
With the front ones i have done now both times 12500 miles on two set's of B.
(The Goodyears i have taken away at 1500 miles, because of eternal discomfort* with that type of tyre on one of my Ferrari 355 models, *= one tyre front left, did explode at 150 miles per hour on a german motorway !).
FelixIbizaSwitzerland
I personally use those tires from B. on my 2005 (European 101-car) GT as well, but it's difficult to tell, my actual mileage is above 35000 miles now
A) do you drive the car often ?
B) do you drive in rather rural area, that means outside of villages/towns
C) do you drive your car alone
D) do you drive a lot in big city's in your state
E) do you drive only in dry conditions
F) do you drive on racing tracks with those tyres
for each of those 6 different possibilities you will get different answers, from every other driver.
A bit you have to find out by yourself, if the rears are to hard, they wear out in the middle of the tyre.
With the rears, i had one of the first set's of them ruined on a weekend, on a rough tarmac on a european race track, but driving only on european motorways, similar to your US Interstates i did do now 15000 miles with a set of rears, but usually 3500-4000 miles if i do drive much in big cities an driving in the swiss alpine roads, with hundreds of thight turns and as well changing surfaces, concrete, asphalt, tarmac, cobblestones.
With the front ones i have done now both times 12500 miles on two set's of B.
(The Goodyears i have taken away at 1500 miles, because of eternal discomfort* with that type of tyre on one of my Ferrari 355 models, *= one tyre front left, did explode at 150 miles per hour on a german motorway !).
FelixIbizaSwitzerland
fjpikul
GT Owner
twobjshelbys
GT Owner
FikseGTS
GT Owner
Thanks for the feedback. I suspected that the Bridgestones should not be at the same air pressure as the Goodyears. I knew FGT owners who have had these tires for years would have a recomendation. The concesus appears to be 30 psi all around.
fjpikul
GT Owner
When I first got mine on (3 1/2 years ago), the tire place set them at 35 psi. Talk about tram-tracking. I have been running 32 religiously, but after the 13K I have on them, the center portions are wearing out faster than the edge. 28-30 should be the number.
Vincent998
GT Owner
I just installed a set of new Bridgestones and set tire pressure at 30 psi as per above. After driving the first 30 miles on them, I happened to notice that there is a clear wear pattern on all four - I can see clearly where the tires are on the road (the centers) and where they are not making contact (the edges). It appears that 30 psi is too high - the rear contact patch width is 9 1/2-10" wide, leaving 1 1/2" of unworn tread outside and about 1" inside. So, it looks as though if I run 30 I will wear out the centers before I wear out the edges - if so, should I run a lower tire pressure to maximize contact patch width?
I'm going to lower the pressure to 28 and see if that affects the width of the contact patch.
Opinions? Advice? All gladly accepted ....
I'm going to lower the pressure to 28 and see if that affects the width of the contact patch.
Opinions? Advice? All gladly accepted ....
MartynL
GT Owner
Xcentric
GT Owner
The GT wheels are the minimum width recommended for the Scuderias. To me, this means lower pressure to compensate for the less than ideal wheel width.
The OEM Goodyears also wear out in the center at the recommended pressure.
I run 28, and the Scuderias will still wear out in the center, although at a slower rate than 32 of course.
I'd be fine with 26 for street cruising, but 32 for the track and/or "spirited" driving. 40 for sustained 150+ mph. :lol
The OEM Goodyears also wear out in the center at the recommended pressure.
I run 28, and the Scuderias will still wear out in the center, although at a slower rate than 32 of course.
I'd be fine with 26 for street cruising, but 32 for the track and/or "spirited" driving. 40 for sustained 150+ mph. :lol
Do it! I run 26.5 (cold) on my Michelins - everyone seems to spec their pressures too high
