I have a relatively new set of Bridgestone's on my 2007 V8V, with stock factory wheels. I check the tire pressure about once a week and so far, these tires are holding up well. Obviously increasing or decreasing the pressure can affect the ride and performance. May I ask, what is the best pressure to keep my tires at for performance and ride? Thanks in advance, Chris

 

For best performance and ride, the OEM spec pressures are what would be best for performance, ride, and also life of the tire ..front: 33psi and rear: 36psi. Unless your doing track or drag racing, there's no advantage in changing a OEM spec rating for the street..

 

Performance and ride tend to be mutually exclusive (at least to an extent). For ride, I'd reduce pressure by a few psi front and rear. The factory specs are for performance and CYA.

For example, my Jag XJR-S recommends reducing front pressure by 5 psi and rear by 8 psi for max comfort relative to the standard pressure for 'performance'.

 

Yes and that was tried and tested by Jaguar in wet and dry conditions..hense why it's displayed on teh tire packet on the door sill..this has not been tried and tested by Aston, and that's why it's not printed on the tire packet. If you start lowering your pressure and not filling to the manufactures tested rating, you can start hydroplaning if you drive in wet conditions, or even worse overheat the center section of the tire and provoke a blow-out due to the tire riding on the exterior edges of the tire due to underinflation. I've seen V8V's and DB9's that come in with 29-30psi all around and the tire depths read (out/mid/in) 3mm/6mm/4mm...this is uneven wear and not suggested, you may do as you wish for it's your car, but coming from a technician I do not suggest it ..An Aston is manufactured stiff and firm, if you want a sluggish ride..buy a Jag ..LOL J/K

 

Like I said..performance vs ride.

 

Thread resurrection! I hope nobody minds.

New member here. I found the thread by googling for V8 Vantage tyre pressures. I want to reignite the discussion if possible.

I believe the claimed 33 psi F and 36 psi R may be incorrect depending on wheel size. I have some information that shows while it's correct to use 33/36 for 18" wheels, it should 33/34 for 19" wheels. The rear pressures are dropped by 2 psi for the bigger 19" wheel. I have been running these pressures recently (2006 car on 19s) and they are far better suited to the car. With 36 at the rear it's too stiff, bouncy - the car doesn't really work.

What adds to the logic is to bear in mind that the 36 psi rear is designed to carry two adults and luggage, as the sticker on the car says. There is therefore a valid case for the car working best with a lower pressure - when you do not have such weight in the car. As with any car, less weight should be matched with lower pressures.

Perhaps the factory suggest higher-than-ideal pressures for safety, in case their customers overload the cars with luggage or are just very heavy themselves. I will keep looking into this.

I am posting this here for others to see. I hope you will find it useful and I recommend being brave enough to try your own pressures if you want to. Certainly for me I am experiencing greater confidence, stability and adjustability, so the performance is better. I don't know what you will find.

Thanks,

Russ

 

Depending on what I'm doing I run a set of 20" Michelin Pilot Sport or a set of 19" Michelin PSS on my 07 DB9. Run 33/34psi Ft and 36/37 rear depending on the Florida weather. "Sport" mode seems to be slightly more noticeable on the 20" PSports. The PSS are great, especially for longer trips. Very happy with both sets! IMHO believe good safe tires are cheap insurance! We're talking high performance vehicles here! Tires are high on my check list!

 

There's an easy way to determine the best tire pressure for a car and driving style, a pyrometer. http://www.longacreracing.com/products.aspx?itemid=1721

To maximize grip and tire life you want the inside, middle, and outside temps as even as possible.