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Re: Best summer tyres
Quote:
wtsnet said:Quote:
AeroSmith said:
I hate to break it to you but Michelins are about the best tires you can get for driving in the wet. I'd go with the PS2s.
S'Funny. All the tyre tests I've seen, Michelins did lousy in the wet.
That is funny, because all the tests I've seen show Michelins as the best. Personal experience confirms this.
Re: Best summer tyres
I currently am using the PS2 and cannot say that they provide much confidence in the rain. No major 'incidents' to say that they are bad, but then again, I will not push them either to find their limits.
On dry warm/hot roads, they are excellent. Drop the temperature to less than 10C, and the road grip drops very quickly.
For the summer, the PS2 are great, but when the weather turns cool and wet, I take another car.
On dry warm/hot roads, they are excellent. Drop the temperature to less than 10C, and the road grip drops very quickly.
For the summer, the PS2 are great, but when the weather turns cool and wet, I take another car.
Re: Best summer tyres
Quote:
AeroSmith said:
Max performance comparison.
Thanks for that. Interesting. The Goodyear Eagles did well in the test I saw too. I can't find an on-line ref for it though. It was from an AutoCar test. My paper copy is buried somewhere, but if I find it I'll try to post a scan. I've posted ranking tables on another thread on this board before somewhere a while ago. I must admit I have no experience of anything other than the Michelins at present, but I'm not sure I'd trust them overly in the wet either.
Re: Best summer tyres
Quote:
wtsnet said:Quote:
AeroSmith said:
Max performance comparison.
Hang on, is that based on a customer survey, rather than any technical testing?
Some test results.
Re: Best summer tyres
Quote:
andrea said:
Sport Auto test 2005
Handling Dry:
Michelin Pilot Sport Cup(semi-slick)
Pirelli P Zero Corsa
Michelin 1.22,3
Pirelli 1.23,0
Brake test 100-0
Pirelli 34,7m
Michelin 35,6
Wet handling
Pirelli 57,8
Michelin 60,1 .............
wet Brake test
Pirelli 44,9m
Michelin 48,3
Those are "R" racing tires, even though they are street legal, they are not "regular" street tires.
Re: Best summer tyres
Quote:
964C2 said:Quote:
andrea said:
Sport Auto test 2005
Handling Dry:
Michelin Pilot Sport Cup(semi-slick)
Pirelli P Zero Corsa
Michelin 1.22,3
Pirelli 1.23,0
Brake test 100-0
Pirelli 34,7m
Michelin 35,6
Wet handling
Pirelli 57,8
Michelin 60,1 .............
wet Brake test
Pirelli 44,9m
Michelin 48,3
Those are "R" racing tires, even though they are street legal, they are not "regular" street tires.
Yeah, not the tires most of us want to run for day to day driving and certainly not for day to day driving in the rain.
Re: Best summer tyres
I found this over on Tire Rack. It doesn't really answer our question but I thought it was interesting enough to post:
Sports cars are often described as vehicles that "stick to the road." Sports car tires make a major contribution to this phenomenon. These tires are very complex products meeting numerous, largely contradictory demands. Finding the proper structure that balances these demands for any given application is the great challenge in tire design.
Porsche designs and manufacturers some of the highest performance vehicles in the world. Because of the integral role that tires play in vehicle performance, Porsche has integrated tire development throughout their process of vehicle development. To be an Original Equipment tire provider on a Porsche vehicle or be approved by Porsche for the replacement market requires the joint product development efforts of the tire engineers working alongside the Porsche vehicle engineers.
The focus in recent radial tire development for Porsche vehicles has primarily included optimum handling on dry surfaces and the safest possible behavior on wet surfaces, even at high speeds. Tires developed by various manufacturers, in concert with Porsche, offer a specific set of wet grip properties which few, if any, other automobile manufacturers demand in equal measure from the tires they use on their vehicles.
Tires may be specified for a particular vehicle or range of vehicles and must successfully pass the tire company's laboratory tests to assure that they would be capable of adequately supporting the Porsche vehicle while allowing it to reach its top speed on the German Autobahn. Additional laboratory, test track and race track tests are conducted to confirm that the prototype tires meet Porsche's noise, hydroplaning and handling requirements. Prototype tires will also be evaluated to assess their high-speed durability, uniformity and serviceability. Upon test completion, the tires will be released for production.
Production tires that have passed all of the tests and received the engineering department's release can be branded with an N-specification. The N-specification brandings include: N-0 (N-zero), N-1, N-2, N-3 or N-4. These markings on a tire's sidewall clearly identify them as approved by Porsche for their vehicles. The N-0 marking is assigned to the first approved version of a tire design. As that design is refined externally or internally, the later significant evolutions will result in a new generation of the tire to be branded with N-1, N-2, N-3, etc., in succession. When a completely new tire design is approved, it receives the N-0 branding and the succession begins again.
It is recommended that only matching tires be used on Porsche vehicles. Since many Porsche vehicles are fitted with differently sized tires on their front and rear axles, this means matching the tire make, tire type and N-specification. If a vehicle was originally delivered with N-specification tires that have been discontinued and are no longer available, it is recommended to change all four tires to a higher numeric N-specification design appropriate for that vehicle. Mixed tire types are not permissible.
It is also important to know that while Porsche N-specification tires have been fine tuned to meet the specific performance needs of Porsche vehicles, the tire manufacturers may also build other tires featuring the same name, size and speed rating as the N-specification tires for non-Porsche applications. These tires may not be branded with the Porsche N-specification because they do not share the same internal construction and/or tread compound ingredients as the N-specification tires. Using tires that are not N-specific is not recommended and mixing them with other N-specification tires is not permissable.
Tires should be replaced no less than in pairs on one axle at a time. Only tires of the same tire make and type must be used. However, in case of tire damage such as cuts, punctures, cracks or sidewall bulges that cause a single tire to be replaced for safety reasons, the remaining matching tire on that axle must not exceed 30 percent wear. If the remaining tire has more than 30 percent wear from new, it should also be replaced. Handling inconsistencies may result if this is not done.
Initially, new tires do not offer their full traction. Drivers should therefore drive at moderate speeds during the first 60-100 miles (100-200 km). If new tires are installed on only one axle, a noticeable change in handling occurs due to the different tread depth of the other tires. This happens especially if only rear tires are replaced. However, this condition disappears as new tires are broken in. Drivers should adjust their driving style accordingly.
NOTE: The last two paragraphs are excerpts from recent Porsche vehicle owner's manuals.
Sports cars are often described as vehicles that "stick to the road." Sports car tires make a major contribution to this phenomenon. These tires are very complex products meeting numerous, largely contradictory demands. Finding the proper structure that balances these demands for any given application is the great challenge in tire design.
Porsche designs and manufacturers some of the highest performance vehicles in the world. Because of the integral role that tires play in vehicle performance, Porsche has integrated tire development throughout their process of vehicle development. To be an Original Equipment tire provider on a Porsche vehicle or be approved by Porsche for the replacement market requires the joint product development efforts of the tire engineers working alongside the Porsche vehicle engineers.
The focus in recent radial tire development for Porsche vehicles has primarily included optimum handling on dry surfaces and the safest possible behavior on wet surfaces, even at high speeds. Tires developed by various manufacturers, in concert with Porsche, offer a specific set of wet grip properties which few, if any, other automobile manufacturers demand in equal measure from the tires they use on their vehicles.
Tires may be specified for a particular vehicle or range of vehicles and must successfully pass the tire company's laboratory tests to assure that they would be capable of adequately supporting the Porsche vehicle while allowing it to reach its top speed on the German Autobahn. Additional laboratory, test track and race track tests are conducted to confirm that the prototype tires meet Porsche's noise, hydroplaning and handling requirements. Prototype tires will also be evaluated to assess their high-speed durability, uniformity and serviceability. Upon test completion, the tires will be released for production.
Production tires that have passed all of the tests and received the engineering department's release can be branded with an N-specification. The N-specification brandings include: N-0 (N-zero), N-1, N-2, N-3 or N-4. These markings on a tire's sidewall clearly identify them as approved by Porsche for their vehicles. The N-0 marking is assigned to the first approved version of a tire design. As that design is refined externally or internally, the later significant evolutions will result in a new generation of the tire to be branded with N-1, N-2, N-3, etc., in succession. When a completely new tire design is approved, it receives the N-0 branding and the succession begins again.
It is recommended that only matching tires be used on Porsche vehicles. Since many Porsche vehicles are fitted with differently sized tires on their front and rear axles, this means matching the tire make, tire type and N-specification. If a vehicle was originally delivered with N-specification tires that have been discontinued and are no longer available, it is recommended to change all four tires to a higher numeric N-specification design appropriate for that vehicle. Mixed tire types are not permissible.
It is also important to know that while Porsche N-specification tires have been fine tuned to meet the specific performance needs of Porsche vehicles, the tire manufacturers may also build other tires featuring the same name, size and speed rating as the N-specification tires for non-Porsche applications. These tires may not be branded with the Porsche N-specification because they do not share the same internal construction and/or tread compound ingredients as the N-specification tires. Using tires that are not N-specific is not recommended and mixing them with other N-specification tires is not permissable.
Tires should be replaced no less than in pairs on one axle at a time. Only tires of the same tire make and type must be used. However, in case of tire damage such as cuts, punctures, cracks or sidewall bulges that cause a single tire to be replaced for safety reasons, the remaining matching tire on that axle must not exceed 30 percent wear. If the remaining tire has more than 30 percent wear from new, it should also be replaced. Handling inconsistencies may result if this is not done.
Initially, new tires do not offer their full traction. Drivers should therefore drive at moderate speeds during the first 60-100 miles (100-200 km). If new tires are installed on only one axle, a noticeable change in handling occurs due to the different tread depth of the other tires. This happens especially if only rear tires are replaced. However, this condition disappears as new tires are broken in. Drivers should adjust their driving style accordingly.
NOTE: The last two paragraphs are excerpts from recent Porsche vehicle owner's manuals.
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