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I loved my old RT 215's. As most of you probably remember, I thought they were the best thing since sliced bread.

The RT615 were supposed to be an improvement. As far as wet weather & tyre wear is concerned. as well as a little tiny dry weather preformance.

I'm not conviced.

I say in the dry the old tyre was better. The RT 215 had a reputation for not being so good in the wet. especially with puddles. I never experienced this issue. In fact, it was the best wet weather tyyre i've had the pleasure of driving. I belive The eagle F1 was the olnly superior tyre in the wet. I've never dríven on the Bridgestones. but I personaly rarely drive in the wet....let alone hard.

This is my own experience. I'd love to know what other people think about the old RT215's compared to the new RT615's.

The magazines say the Rt 615 was a better tyre. New & impoved RT 615, is supposed to be an improvement in all ways.
In my boocks ....what a load of crap.

Next set of tyres......will be back to basics.

It will unlikley be an RT615.

I'll be dreading the decision process.

My last set of RT215's were great all round, until they wore down a bit, then then wet-weather performance became awful. The dry weather grip was extremely impressive right up until the end (I donated them to a friend for a trip to WSID).

I've had good experiences with yokohama road tyres (A539/AVS V102), some dunlops (dz101, fm901) and up-range falkens (st115/rt215).

hey.. when you guys use one of these high grip tyres, do you realise that a LSD is MUST in order to keep the torque or speed at the end of the corner?

used to use one of those not high grip tyres, I found that they are easier to handle although they lose traction easily... but with these high grip tyres, it will start to lose traction when exiting corner and which slows down the speed... or would it b bcoz of the tyre pressures? initially i m put 38 front and 37 rear for 215/40R16....

NB8C wrote:hey.. when you guys use one of these high grip tyres, do you realise that a LSD is MUST in order to keep the torque or speed at the end of the corner?

maybe i should list all my mods.

yes a 1.8 diff with a torsen has been fitted to my mere "almost stock 1.6"

yes i do agree. I feel the LSD combined and made all the strucktural Tyre & suspension mods work together. It made it feel like a comletely different car.
Tyres & diff were done at about the same time.

although overall the car is nowhere near stock as the suspension, Driveline & rigitity have been drastically modded. The motor is probably one of the only things "close to stock".


But back to the subject.

am I imagining it or do the RT615's need less warming up. Than the old RT215's

anyone have any opinions?


Mind you.....It hasn't been too cold.

My RT615s have definitely gone off over the 9 months that I have owned them.
I've had a few \"R\" compound tyres and it feels like the RT615s do go off after a certain number of heat cycles, just the same.

How long have you ahd them Stan? Are they properly run-in yet?

since christmas
just over 2k km

I was under the impression (by reading reviews on them) that the 215's were better for short sprint tracks ie they warm up really quick
whereas the 615's took longer to warm up and as such underperformed on motorkhan tracks and 5 lap or less sprint tracks.

This could be why they feel less grippy on the road.
I also found with the 215's that i bought they were bad untill i out some more camber on them. Initially i had 1.5deg on the front (couldnt get more due to car being too high) but i lowered it and have about neg 2-2.5 degrees.
Before the camber change they were terrible, after they were great.

The 615's on my bro's car feel a bit average most times but he's running like 1deg camber so if he had more i'd say they would grip much better.

Dave

its due for an allignment. so at the moment it could be anything.

but originally fronts started off at -2.5 at the front. -2.25 at the rear.

i'm just about to go & check pressures.

both the RT215's and 615 have been at this allingment.

Don't align anything until you put those new bushes in...

ampz wrote:Don't align anything until you put those new bushes in...

Thats for sure

Hi there guys,

I am putting on the RT615 all-round on my SE tmrw, and getting a proper alignment, and wondering what would be a suitable alignment and set up. Keep in mind it is predominately for city driving, and the occasional track use. The car has 148rwkw and would like to preserve the tryes for longevity, yet max performance from tyres.

cheers

C+C

C+C wrote:Hi there guys,

I am putting on the RT615 all-round on my SE tmrw, and getting a proper alignment, and wondering what would be a suitable alignment and set up. Keep in mind it is predominately for city driving, and the occasional track use. The car has 148rwkw and would like to preserve the tryes for longevity, yet max performance from tyres.

cheers

C+C

Track settings and tyre longevity is an oxymoron, ideally one would adjust toe and camber just before going on the track for best grip and change it back to road settings for road use to prolong tyre life.

Im not sure on whether or not using NA, NB or NC settings would be suitable for the SE as our car is more dampered and stiffer. The settings i am using are CT's and seem to be doing pretty good on the road so far, yet to test them on the track, but will have a run through nasho shortly.

I have the RT 615's on my SP, and I think they're the best tyres I've ever dríven on!
They grip almost as well as my D02's (track rubber), yet they have a smooth ride and are fairly quiet, which the D02's are certainly not.

I'm running a little negative camber front and rear, and they stick like the proverbial to a blanket.

They're so good in fact, that I want them as my next tyres on my Merc and generally I've never been a big fan of Falken tyres.

As an aside, I replaced the tyres on my wife's car the other day.
She was running Continentals, but changed them for Dunlop F1's.
Mrs Benny reckons they are really good and very grippy. Much better, in her opinion, than the Conti's.

No doubt The RT615 is a fantastic tyre. I wasn't trying to take anything away from it.

I have this feeling though that its predecessor the RT215 was a slighly better tyre.As far as the dry grip goes.
Thats my opinion. I was courious if other people felt the same. yes My car is in desperate need of a new allingment. As the front passenger wheels is complaing occasionally when cornering hard down one of the favourite streches of road. The pressures were a little on the low side. It did make a slight difference.

my point was though. Manufactures tell us they have improved a tyre. All the magazine tests seem to re-inforce that. But i'm not conviced. Lets face it its nowhere near bad enough for me to go & sell these tyres & change them to something else. I will keep them for the rest of thier life until cremation.
It was a big deal for me to get these. as i had to part with my most Favourite wheels. As Falkens decided not to imort the 16\" size.

I may be a missguided on this opinion.......thats why I'm asking.