[little_croco]

Originally Posted by ny911

After some testing with RE11 tonight on TM highway and route 3, I would recommend PS2 for summer.

I had zero issue with my RE on my EVO last sat around 3:30pm running On Eastern Corridor, doing about 80... So I still feel good about them, so far

[ny911]

Originally Posted by little_croco

I had zero issue with my RE on my EVO last sat around 3:30pm running On Eastern Corridor, doing about 80... So I still feel good about them, so far

I was 100km/h on TM highway and 120km/h on route 3 at 11pm last night.

Btw,you shouldn't compare a 4 wheel drive car with a rear drive la. I believe PS2 has better performance on wet road (from my limited experience on PS2 RFTs).

[ny911]

Originally Posted by cc_bavarian

bro...would that be a "dry" or "wet" summer?

HK is always wet during summer.

[little_croco]

Originally Posted by ny911

I was 100km/h on TM highway and 120km/h on route 3 at 11pm last night.

Btw,you shouldn't compare a 4 wheel drive car with a rear drive la. I believe PS2 has better performance on wet road (from my limited experience on PS2 RFTs).

true, but to me PS2 got a shorter thread life.

btw, last nite around 11:30pm I was with my e90+RE on Princess Margaret Road feeling the grip not tooooooo fast though...

[ny911]

Originally Posted by JohnMan

Did you encounter the kind of downpour I experienced? Or hopefully (luckily for you), just a more "normal" rain shower? So I guess PS2 has better wet traction then RE11? I actually saw one or two cars hydroplaning on the highway last night, did you see any cars loose control? It's funny, the average driver don't think much about "mundane" items like their tires until it's raining cats and dogs like last night. Then you really will be counting on the tread pattern and depth of your tires to see you through.

I intended to test out whether RE11 is superior to AD08 under heavy rain on TM highway,therefore I tried to drive a bit faster than legal speed to test it. Hence, mine was the only car hydroplaning (p.s. both tyres with low mileage and good trends).

Although I was trying different tyres with differnet cars, I could conclude that tyres with good dry peformance couldn't be doing as good as other normal performance tyres on wet TM highway. Probably the better performance tyres are wider,which has more surface and they are running under 'slightly more powerful' cars.

The golden rule for safety under heavy rain is always driving under legal speed. Cheap or expensive tyres would feel almost the same under heavy rain. If cost is an issue while good performance is essential, go for Z1 (18'')/AD08 (19''), otherwise PS2 would be good for both wet and dry.

p.s. if you want to give some reward (stone chips) to cars who push you hard,highly recommednd R tyres or AD08.

[JohnMan]

Originally Posted by william_cwl

goodyear is actually quite good
got my last set of revspec changed after ~20k, coz the thread on the side ran out
the shop told me the F1 asymmetric would be a bit more durable, though it's a bit more bouncy and noisy

Yeah, I can understand some of f1's drawbacks. It's not a perfect tire, but I think it struck the balance between daily commuting and weekend "spirited" driving well enough. Therefore, since I'm focusing on more of a balance between performance and tread life, I think the f1 will suit my taste for now.

(Of I course, if I was driving a heavily modded M3 for track use then I will go for more hardcore tires, hehehe...)

[JohnMan]

Originally Posted by ny911

I intended to test out whether RE11 is superior to AD08 under heavy rain on TM highway,therefore I tried to drive a bit faster than legal speed to test it. Hence, mine was the only car hydroplaning (p.s. both tyres with low mileage and good trends).

Although I was trying different tyres with differnet cars, I could conclude that tyres with good dry peformance couldn't be doing as good as other normal performance tyres on wet TM highway. Probably the better performance tyres are wider,which has more surface and they are running under 'slightly powerful' cars.

Well, I guess hydroplaning could be very dangerous, but I trust your driving skills, if it's low mileage and good tread depth, then chance of regaining full control is better. Of course, it's a very bad idea if you have worn tires to drive fast in the kind of rain like last night, then losing control is extremely likely, but I guess you know that already, so I won't preach, hehehe. And driving in such condition is the only way to prove the wet traction ability of the tires...just remember to keep a safe speed...and know the liability if you end up crashing into another car in such condition...I know because my friend got in deep legal trouble back in Canada for slamming into another car in a downpour while speeding, that was a dumb move on his part.

"The golden rule for safety under heavy rain is always driving under legal speed. Cheap or expensive tyres would feel almost the same under heavy rain. If cost is an issue while good performance is essential, go for Z1 (18'')/AD08 (19''), otherwise PS2 would be good for both wet and dry."

You raise an interesting point, I wonder about the hydroplaning resistance between performance tires and regular passenger tires, how big a difference is there?

[ny911]

Originally Posted by JohnMan

Well hydroplaning could be very dangerous, but I trust your driving skills, if it's low mileage and good tread depth, then chance of regaining full control is better. Of course, it's a very bad idea if you have worn tires to drive fast in the kind of rain like last night, then losing control is extremely likely, but I guess you know that already, so I won't preach, hehehe. And driving in such condition is the only way to prove the wet traction ability of the tires...just remember to keep a safe speed...and know the liability if you end up crashing into another car in such condition...

holding your steering wheel tight and stick with the middle lane(s) under wet.

[ny911]

Originally Posted by JohnMan

Well, I guess hydroplaning could be very dangerous, but I trust your driving skills, if it's low mileage and good tread depth, then chance of regaining full control is better. Of course, it's a very bad idea if you have worn tires to drive fast in the kind of rain like last night, then losing control is extremely likely, but I guess you know that already, so I won't preach, hehehe. And driving in such condition is the only way to prove the wet traction ability of the tires...just remember to keep a safe speed...and know the liability if you end up crashing into another car in such condition...I know because my friend got in deep legal trouble back in Canada for slamming into another car in a downpour while speeding, that was a dumb move on his part.

"The golden rule for safety under heavy rain is always driving under legal speed. Cheap or expensive tyres would feel almost the same under heavy rain. If cost is an issue while good performance is essential, go for Z1 (18'')/AD08 (19''), otherwise PS2 would be good for both wet and dry."

You raise an interesting point, I wonder about the hydroplaning resistance between performance tires and regular passenger tires, how big a difference is there?

It's mainly about the tread design,compound and the width. I just feel more safe under rain on my 523's 225 55 16 Michelin Primacy than 335's 265 30 19 AD08 or Z4's RE11 255 35 18 (at around the same speed on same road/lane)

[ny911]

Originally Posted by Icy J

E93 roof was leaking this morning

Coupe rules.

[JohnMan]

Originally Posted by ny911

It's mainly about the tread design,compound and the width. I just feel more safe under rain on my 523's 225 55 16 Michelin Primacy than 335's 265 30 19 AD08 or Z4's RE11 255 35 18 (at around the same speed on same road/lane)

It's interesting just how complex tires are. I bet the vast majority of HK drivers (or for that matter, drivers in US or UK or Canada or Australia) don't give much thought to it. But the amount of engineering effort going into designing the tires by the various tire manufacturers shows there is a great deal of science involved. Granted, we don't hear much about it, because the specific engineering knowledge on contact patch, tread design or tire materials (i.e amount of carbon black or silica content in the tires) is considered competitive trade secrets by the tire manufacturers. But I always find it amusing that there is so much more to the unassuming black and round rubber then meets the eyes.

[Harriz.c]

http://image.nengun.com/catalogue/original/nengun-2846-02-bridgestone-potenza_-_re-11s.png


Anyone seen this in hk?? Re 11 S

[ny911]

Originally Posted by Harriz.c

http://image.nengun.com/catalogue/original/nengun-2846-02-bridgestone-potenza_-_re-11s.png


Anyone seen this in hk?? Re 11 S

R tyres wor?

[cc_bavarian]

Originally Posted by JohnMan

"The golden rule for safety under heavy rain is always driving under legal speed. Cheap or expensive tyres would feel almost the same under heavy rain. If cost is an issue while good performance is essential, go for Z1 (18'')/AD08 (19''), otherwise PS2 would be good for both wet and dry."

In any condition, you should not be driving above the legal speed limit.

Golden rule for safety distance behind a motor vehicle is 1-1.5 car length for every 10 mph (16 km/h). At 120km/h you should have 7-8 car lengths which is 150 ft distance to stop no matter if you have good tires or brakes. I'm more worried about being rear ended since HK drivers like to tailgate! Also, my peeve are HK drivers driving in my blind spots on open highway.

Normally I use 3-6-9 seconds rule. 3 under normal, 6 in rain/fog or 150 km/hr and 7-9 under heavy torrential downpour/heavy fog (+ not being able to see beyond the vehicle in front) or +180 km/hr.

[JohnMan]

Originally Posted by cc_bavarian

In any condition, you should not be driving above the legal speed limit.

Golden rule for safety distance behind a motor vehicle is 1-1.5 car length for every 10 mph (16 km/h). At 120km/h you should have 7-8 car lengths which is 150 ft distance to stop no matter if you have good tires or brakes. I'm more worried about being rear ended since HK drivers like to tailgate! Also, my peeve are HK drivers driving in my blind spots on open highway.

Normally I use 3-6-9 seconds rule. 3 under normal, 6 in rain/fog or 150 km/hr and 7-9 under heavy torrential downpour/heavy fog (+ not being able to see beyond the vehicle in front) or +180 km/hr.

Ha, I have seen quite a few taxi drivers rear-ending other cars for tailgating. It's such a retarded behaviour, they think they can intimidate the driver in front when in fact they end up the loser for having to pay damages for rear-ending the car in front. I guess this mentality is why they are taxi drivers! But then HK drivers are aggressive by nature. It's remarkable that road rage isn't a bigger issue here. If HK drivers try to drive like they normally do in the States, they will be shot at in or have their face bashed in in no time. Of course, mainland drivers are on another whole new level...

But getting back to topic, 180 km+ in a torrential downpour? I don't think ANY tire can handle that and not hydroplane!
I recall a few drivers simply parking their car on the side of the highway or under the bridge during that downpour because the forward visbility is too limited and their tires probably could'nt handle the condition.

[JohnMan]

Just curious, next time if I need to, how do I say "balance the tires" in Chinese as well as check 'wheel alignment" in Chinese? Thx.

[Harriz.c]

Originally Posted by JohnMan

Just curious, next time if I need to, how do I say "balance the tires" in Chinese as well as check 'wheel alignment" in Chinese? Thx.

"Dun tai" wheel balance

And "tai chek" wheel alignment

If u know what I mean

[superdx]

I'm using PS2s and they've served pretty so far, but so damn expensive. When I have to replace these, I'll probably go for something a little cheaper like PS3.

[JohnMan]

Originally Posted by superdx

I'm using PS2s and they've served pretty so far, but so damn expensive. When I have to replace these, I'll probably go for something a little cheaper like PS3.

How much did you get your PS2s for? How much cheaper for the PS3? I paid $1350 per tire for my Goodyear F1s.

[NL684]

Get my PSS installed tonight and have a test drive in Shek O.......i can say the dry performance is very similar to the AD08 i experienced before.......let me report the wet performance later on.....

As i upgrade the size from 225 to 235 and 255 to 265.......better handling but feel less response when start up from stop......and of course.....higher fuel consumption is expected.....

[KDSKDS]

I use Pirelli Cinturato P7. Pretty good grip in both wet and dry. A bit more noisy than comparable sized (R16s) regular Pirellis P7s but that is the characteristic of run flats. "A" wear rating. Cost about $285 each here Down Under.

[cc_bavarian]

Bro...how's the noise vs. AD08? You now have some very heavy shoes!

Originally Posted by NL684

Get my PSS installed tonight and have a test drive in Shek O.......i can say the dry performance is very similar to the AD08 i experienced before.......let me report the wet performance later on.....

As i upgrade the size from 225 to 235 and 255 to 265.......better handling but feel less response when start up from stop......and of course.....higher fuel consumption is expected.....