Bridgestone Adrenalin RE001 vs PP2 vs rest?

[JBT]

34psi - hmmm, doing some research (ie google) and maybe it is a bit high?

Yep. Try the recommended pressure or 30-32psi and see how it feels.

[Guran]

Adrenalins are directional and assymetric. That means the front left can be swapped with the rear left, but not the front right. You should have two of each orientation!

[TieNN89]

Adrenalins are directional and assymetric. That means the front left can be swapped with the rear left, but not the front right. You should have two of each orientation!

:S

are you sure about this?

[connico]

Adrenalins are assymetric and are NOT directional

Fixed

[TieNN89]

thought so

[Guran]

Hang on a minute! My previous comment was based on my assessment of the tread pattern only. I just checked the Adrenalins on two of my cars and also the RE050As on our third car. All have "outside" marked on the tyre wall indicating that they are assymetric. Correct. But the tread pattern does NOT reverse itself for left and right sides ie. all four tyres are identical. This is a shock to me because the tread pattern is obviously set up to maximize water pumping in one direction. They SHOULD be directional! I would predict this means that the drivers side tyres will have less grip in the wet because they'd tend to pump water into closed cavities rather than into the central ring. Perhaps this helps explain the questions that have been raised here about wet grip in the Adrenalins. Scary!

BTW the RE050As are the same except that the tread pattern is cleaner without any "closed loops".

[marcusus]

Hang on a minute! My previous comment was based on my assessment of the tread pattern only. I just checked the Adrenalins on two of my cars and also the RE050As on our third car. All have "outside" marked on the tyre wall indicating that they are assymetric. Correct. But the tread pattern does NOT reverse itself for left and right sides ie. all four tyres are identical. This is a shock to me because the tread pattern is obviously set up to maximize water pumping in one direction. They SHOULD be directional! I would predict this means that the drivers side tyres will have less grip in the wet because they'd tend to pump water into closed cavities rather than into the central ring. Perhaps this helps explain the questions that have been raised here about wet grip in the Adrenalins. Scary!

BTW the RE050As are the same except that the tread pattern is cleaner without any "closed loops".

The correct direction for water dispersion is away from the tyre itself, irrespective of whether it goes left or right. The fact that the adrenalins are asymmetric is a moot point, so long as it moves the water away from the tyre.

I for one don't find there to be much problem with my adrenalins in the wet. Of course grip isn't going to be as good as in the dry, but I don't find them to be ridiculously worse when in the wet.

Perhaps people are just hammering along in the wet without really changing their driving style to suit the conditions, hence the complaint about their wet weather performance?

[Guran]

Hang on a minute! My previous comment was based on my assessment of the tread pattern only. I just checked the Adrenalins on two of my cars and also the RE050As on our third car. All have "outside" marked on the tyre wall indicating that they are assymetric. Correct. But the tread pattern does NOT reverse itself for left and right sides ie. all four tyres are identical. This is a shock to me because the tread pattern is obviously set up to maximize water pumping in one direction. They SHOULD be directional! I would predict this means that the drivers side tyres will have less grip in the wet because they'd tend to pump water into closed cavities rather than into the central ring. Perhaps this helps explain the questions that have been raised here about wet grip in the Adrenalins. Scary!

BTW the RE050As are the same except that the tread pattern is cleaner without any "closed loops".

The correct direction for water dispersion is away from the tyre itself, irrespective of whether it goes left or right. The fact that the adrenalins are asymmetric is a moot point, so long as it moves the water away from the tyre.

I for one don't find there to be much problem with my adrenalins in the wet. Of course grip isn't going to be as good as in the dry, but I don't find them to be ridiculously worse when in the wet.

Perhaps people are just hammering along in the wet without really changing their driving style to suit the conditions, hence the complaint about their wet weather performance?

It seems you've misunderstood my point Marcus. I should have explained that "maximize water pumping in one direction" is in relation to rotational direction rather than lateral direction (left/right). Check the attached photos that were taken looking at the front of my car. Imagine how water would flow through those sipe channels as it rotates and you should be able to see what I'm on about. I would be very surprised if driver and passenger sides gave equal grip in wet conditions.

adrenalins.jpg

[connico]

Why wouldn't they have equal grip?? They are the same tyre and it looks like the the "wet" tread side are pointing out which is as i assume the right fitting for the tyres?

Regardless grip on each side is relative to the road condition, tyre wear, car inertia and many other such driving conditions. I personally would trust the developers and quite agree with marcusus assessment of wet and dry conditions. Its all relative to ones skill and driving habits.

[bensale]

I have to say i had the same thoughts as you Guran when I looked at my tyres, however I thought that Bridgestone must know what they are doing... Still doesn't look right to me... although I don't really know much about tyre design and will go with people who know more than me.

However, compared to all other tyres I've used on the car the re001's are pathetic in the wet, so much so that I've put my other wheels back on until summer so I don't have to use them. Is it possible that the slightly different compound of the Australian tyres could mean they are worse than the Japanese ones?

I currently have some Toyo T1R's on the front of my car, the difference is amazing! The car actually feels composed and isn't scarey to drive when the road is even damp now. Even the old bridgestone turanza's I have on the back with next to no tread are at least as good in the wet as the re001's....

[Guran]

bensale - I've got Aussie Adrenalins on my MX-5 and Jap on my Volvo. Next wet day I'll take them both out and see if I can tell any difference. Not an ideal comparison but it's something. In particular I'll be looking for differences between left and right corners.

connico - did you look at the image I posted in my previous message? Read the notes on it too and you should then understand my point. Adrenalins have a directional tread but you can only buy them with one direction! Sounds like a bit of misleading marketing and cost-cutting manufacture/distribution.

[connico]

Yes i took a look at your notes on your photo, you say your contact points are different on each side, but are they really? A properly aligned wheel and inflated Tyre is going to induce the same contact all along the face of the Tyre. This is why alignment and proper inflation of a Tyre is so important.

Think about what your saying here, if your right about this it means a total recall of all bridgestone adrenaline tyres as its dangerous if the Tyre are actually directional. You would think you trust the manufactures?

[d-mag]

Thanks for the pic Guran, I've wondered the same things about these tyres myself. Every time I look at my car I think "the left side looks fine, but the right side just doesn't look right". Glad to see I'm not alone.
I've also found the wet weather performance to be a little below par.
Mine are Jap made 205 50 15.
Guran, I too had much much better grip with my old RE050A. The tyre was a little more noisy than the RE001's, but that's a trade-off I'll take any day.

Edit: conico, alignment and inflation have nothing to do with the point Guran is making about the direction of the tread as the tyre rolls????

[connico]

d-mag: the direction of the thread on the above pictures are the same, they are essentially point back away from the tyre. Guran whole point revolves around the channeling of these said groves and the "first point of contact"

My convinction is that the point of contact is same all along the face, that the direction of the tyre as long as fitted as per the manufacture instructions should not matter, I.E the tyre should channel the water backwards..

[marcusus]

Guran: I still got your initial point, and I still stick with my original statement. I'm running these tyres as well and initially thought along the same lines with regards to it looking funny. But as mentioned by connico, you would think that Bridgestone would know what they're doing. In the end, the water is still dispersed by the tread pattern, and that's the important thing. It doesn't matter if it disperses it in the same direction for both tyres.

I'm really surprised at people's comments about these in the wet. I found these tyres to be better than my old Kuhmo SP31's (I think that was the model number) in the wet by far, and those things were properly directional and symmetrical.