New RT615s

[green_comet]

Hey guys, Im currently running bridgestone g3's in 185/60/14 on 14x6.5 wheels with a +14 offset.. Due to my car being lowered, the wheels just scrub when cornering hard over bumps..

I really dont like the bridgetone's, so i was looking at getting rt615's.. If i run the 195/60/14's will these scrub more due to the tyre being wider??

[Charlie Brown]

LOL US$110 per tyre to ship to australia that would work out at around AUS$320 before import duty.....This kind of starts making the Federal 595 RS very attractive.
this is from 1010Tyres.com
oh well......

the waiting game continues

Hey Stan,,

From Australian Customs Service web site:

When buying over the internet
If you arrange for goods to be brought into Australia, you are regarded by Customs as the importer of those goods. This includes purchases made over the Internet, regardless of whether or not you intend to sell or distribute those goods, own a business and if the goods are for your personal use or a gift for someone else.
Your imported goods may arrive in Australia either by airfreight, express courier, sea cargo or via the post office. The method of delivery will determine the Customs clearance formalities and charges.
Customs advises people purchasing goods over the Internet to be aware that, when those goods arrive in Australia, they will be subject to Customs controls.
Certain goods brought into Australia require an import permit. Customs might seize or detain such goods pending presentation of the permit. Alternatively, the goods might be a prohibited import and not allowed into the country under any circumstance.


All goods (except for tobacco products and alcoholic beverages) may be imported duty and tax free if their value is $1,000 or less.

Note: However, where there are multiple packages to the same addressee in Australia from a single consignor overseas that arrive at about the same time, then the value of all packages will be combined for duty and tax assessment purposes.

So you can bring in three now, wait awhile and bring in another one.

[Brad]

I took mine up Mt Glorious right after I bought them and was also less then impressed...that was until I got about 500kms under them then they came on really well, especially when warm. You'll find them very greesy until then.

At the track they are very good but don't expect anywhere near R-spec levels of grip. Run them 32deg hot all around, will be about 27deg cold. How much camber are you running?

[Boags]

At the track they are very good but don't expect anywhere near R-spec levels of grip. Run them 32deg hot all around, will be about 27deg cold. How much camber are you running?

You mean 32PSI? I'm confused.

Boags

[Brad]

At the track they are very good but don't expect anywhere near R-spec levels of grip. Run them 32deg hot all around, will be about 27deg cold. How much camber are you running?

You mean 32PSI? I'm confused.

Boags

Woops, yeah, 32psi hot. QR will make the LH tyres hotter than the right so check them everytime you come in to all be at 32.

[Brad]

Who did the alignment...Fulcrum? I'm running -1.65 all around with 5.95deg castor. Perhaps they prioritised castor over camber. Should be able to get at least -2.00

[Brad]

Quickfit. No caster was only 4 deg. I had written out the specs from the tech article but thats what the bloke could only achieve (supposively) What could be reasons for such a weak range of adjustment?

Damaged or clogged camber bolts perhaps?

[JBT]

Alignment machinery out of calibration or incompetent operator are possibles too.

[rodent]

Would ride height also be a factor? Lower = greater possible camber while maintaining castor, or at least according to my n00bish reasoning

[ASE05]

Yep, agree with phatmx, the RT-615s suck bum at anything below 35psi

@ 32psi hot, it had AMAZING snap oversteer and I had a pretty major loose @ 120km/hr into turn 1 at this pressure. Couldn't hit turn 1 at any more than 120-125km/hr.

By the end of the day I was running around 38psi hot all round and was able to enter turn 1 @ 135-140km/hr There was still oversteer but easlily controlled and actually quite fun. Pitty I only fixed this in the last two sesions of the day. I guess I know for next time!

[kula]

wow

thats weird

i run my 615s at about 26-28 psi...
any higher and they felt crap.. but maybe i havent tried over 35..

[ASE05]

wow

thats weird

i run my 615s at about 26-28 psi...
any higher and they felt crap.. but maybe i havent tried over 35..

Anyone think that wheel diameter could have anything to do with variations for tyre pressures? I'm running 205/40/17's and @ 32psi hot I could feel 'em rolling around on the sidewall and had a good spin the next lap.

A mate went to do a skid pan day and was told to arrive with AT LEAST 40psi in 'em cold!!?? That's for a F6 Typhoon though so maybe the weight was a factor in their suggestion.

I've also noticed that after a couple of track days that the they aren't as good on the road as when I first got 'em. The tyre fitter had 40psi all round and went for a spin throught Mt Nebo etc and it stuck like sh*t to a blanket. I'm now finding that unless there's heat in 'em there is no rear end grip.

Grrrrr, too much info and too little knowledge on how to apply it !

[ASE05]

ASE05, I had 38psi when i picked mine up. I found the ride too harsh, I've kept it at 35 now and it seems fine for road. As for grip I think mine have gotten better with age although I have found the limit so even in my NA i can get the arse out. You've probably just started to push it harder... See how they go next track day

I'd like to think I was pushing harder but a best of 1:31 on the National @ QR with the RT615s VS the standard Toyo Trampio Vimode half shagged netting a best of 1:29.50 have got me thinkin' I was hoping to dip into the high 1:28's as a minimum with the RT's

I'm finding the RT's are too sensitive to pressure/temps vs. the stocko's

Again, I'm learning as I'm going so I have probably missed something