lfrers

iTrader: (9)

New tires worked for me. I had some Good Year Eagle F1s on the rear (295-40-18) but I just spinning 'em way too easily even from 45-50 mph roll. They looked like they had plenty of tread left on them. Strangely enough the rubber on the older tires seemed much harder. I think they are like 4 yrs old or older??? I dunno, It seems like the rubber starts to dry up after a few years and hets harder/less grippy. I just got these Good Year Eagle F1s GS-D3s in the same size. They are the stock tires for the 2006 Ferrari F430. They are So much grippier. I can get on it late in 2nd with only minimal spin. Much better. I try to take some of the faster cars out here and I have decent power. But the traction problem was jacken me up.

BTW, I don't like the 18s on this car. Looks too small. I want to go 19" but probably won't anytime soon cause I also just bought another HRE rim 'cause I was having way too much trouble getting a wheel for a spare that looked similar and would clear the brakes. Sucked. $$$

Blah Blah Blah. Any way the moral of the story, I guess, is to keep your tires fresh, less than a few years old, if traction is important to you.
As far as I can tell anyway.

Heres a few pics.

lfrers

iTrader: (9)

Another pic of the tires. I guess they look OK?

DryBlaze

Looks sick. I love HREs but they just cost way too much. 18's look fine with the SC, I would just keep it.

jibbby

Just remember softer rubber on the tires makes for better traction and also quicker wear......What also helps with traction is a good LSD, fatter rear tires, dampening force such as coilovers, lowering the rear helps with weight transfer...What else? Ummmm I think that covers it all...

Dude, your sporting 430rwhp the only way to keep those rears from spinning is laying off the gas...At 300whp I get major wheel spin in first and second at full throttle...I can only imagine 400+ whp, that would probably present problems for me in third gear...That's alot of power your sporting there chief!!!!!

lfrers

iTrader: (9)

HEHE yea, I guess it is a bunch of power. But not nearly as much as a lot of other members on this forum.

I do have a Supra TT 3:13 LSD. Fatter rear tires? Can I go wider? As it is now, without pulling the fender but just shaving them I only got a few MM of clearance. I should just go with one big Fred Flinstone rear wheel. YEA! I got coilovers, cheap but they work. I think the rear is lowered just a tad more than the front. Not sure if it's enough to help with weight transfer.

Anyway I just though i'd throw that out about new tires. I never thought about it and I think it was a factor (other than my poor drifting skills) in my doing 360s and totaling my first 97 NA-T. What a nightmare. i can deal with more wear if I can keep the car going in a straight line when I really get on it.

What company uses that saying "Power is nothing without control"?
Damn! I forgot to save my old tires to practice drifiting with.

PHLSingle

If you really want to hook on an 18" tire - honestly and this is from experience - pick up some 18" bfg drag radials and don't worry about trying to go wider.

Obviously, they will wear quickly though. Otherwise get some new radials (not 4yrs old!) look at their reviews, etc. I mean 430rwhp is very solid but not ridiculous...yet

Jay

sc250tt

yea i have the same issues with my auto 1jz even if i roll i still spin tires like im on stocks im currently running falken fk 451 285 30 19 tires and still not that much traction .i jus got use to it dont really care if i spin .i jus hold down the steering wheel like im driving a 454 chevy .after spinning i have perfect traction if you want more traction stick to 18 or even get 17 the bigger the rim less traction

SUPRMSC

iTrader: (7)

I have the same problem here and there, best thing to do is have your "manual" traction control. Build up on the boost, dont slam the gears. You'll launch faster on a roll more smoothly.

jibbby

Guys the back ends of the SC's are simply very light in weight..Especially if you start removing stuff, like the spare, CD changer, tools, etc...This is almost comparable to the early model 5.0 Ford Mustangs...It is what it is....

SCoupe

Having traction issues ?

Uhh, yeah, and brain issues. Found out the hard way and it makes me sick.

Just after install of the T61 single in Oct, I ran it for month on the 10.5 psi Tail yellow wastegate spring delivering ~310 whp. I take it in for tuning and bump the boost to 16psi. I leave the shop at 7pm with 410whp (on a Dynopak dyno, lower #'s, think 430whp for Dynojet). By 1pm the following day I smash the rear wheel into a curb cracking the rim and damaging the UCA, LCA, axel and suspension cross member. Maybe some other stuff, dk yet.

Yeah, traction issues, brain issues as in thought I knew what I was doing when @ ~9/10's throttle on less than a straight away on ramp. Tough lesson to learn, car is in shop now. I'm running the Supra n/a LSD and it helps as in the entire rear end goes off at once instead of smokin just one tire.

Tires are brand new Falken Azenis 275/40-17 treadwear 200. Very good tires, huge improvement over 18's with Mich Pilots. The Azenis were not warmed up at the time, but mostly I just did not know wtf I had under my foot.

Forewarned, there is a very different world north of 400whp.

LexAnt

iTrader: (2)

as far as i've read on supraforums, you want a taller tire for better traction in launching as that provides more patch going straight, wider provides better traction in lateral motions.

jibbby

Smaller diameter wheel makes for faster speeds, ligher in weight, etc......More wheel rotation then a taller wheel....

Sc dRifta

id say r compound tire if really bothers u. i get the same problem too . i dont catch traction til i hit the top of 2nd gear. i have a kaaz 2 way it helps. i leave my traction control on too as well. auto ecu 5 speed conversion. Tire pressure is key too if u have 2 high pressure u lose traction easier myabe lower to like 36 psi cold good luck. i run 57 psi cold on my sumitomo;s lol

PHLSingle

If you're talking taller tire for straight line traction - it's really n/a in these applications. The taller tire / bigger side wall does 2 things: 1) changes the effective gear ratio and 2) the sidewall wrinkles and flattens out when you launch...trust me - you're not doing that with ANY radial tire...and even on a drag radial - you need a large sidewall to wrinkle it.

Honestly, if you guys really want to solve this, put on the BFG g-force DRAG RADIAL - comes in a ton of 17 & 18" sizes - still with small sidewalls. I've run these in 18" size - you WILL hook up 400rwhp - ....

JoshFSM

phlsingle is right, the 295-35-18 bfg's will hook, especially with the suspension dialed in. My car makes 570ish on pump and when the tire gets warm, it will grab fairly well and still paint two healthy lines all over the street