Looking for picture 245/35/19 and 285/30/19 on stock wheels and height from the side!
08-06-14, 02:42 PM
#16
Lexus Fanatic
Thread Starter
see what I mean. 
My F is bone stock minus rear F sport sway bar and there is no slipping or spinning of the wheels if I launch the car from a stop unless its on that smooth black top material you find at malls and huge lots, and even then the TCS light never comes on . I just can tell the rears are rotating faster than what the pull feels like . Not sure if exhaust mods create enough added low end torque to cause this. My car hooks up fine and did even with the REO50A. The only problem I had was exiting corners on the track really hard and early during two sessions that were 100+ degrees. Once the rear bar went on it pretty much solved the understeer issue at the track. Add totally worn rears, high track and ambient temps, and narrower tires and you're going to get that stupid little yellow nanny flashing at you.
Last edited by I8ABMR; 08-06-14 at 02:49 PM.
08-06-14, 03:20 PM
#17
see what I mean. My F is bone stock minus rear F sport sway bar and there is no slipping or spinning of the wheels if I launch the car from a stop unless its on that smooth black top material you find at malls and huge lots, and even then the TCS light never comes on . I just can tell the rears are rotating faster than what the pull feels like . Not sure if exhaust mods create enough added low end torque to cause this. My car hooks up fine and did even with the REO50A. The only problem I had was exiting corners on the track really hard and early during two sessions that were 100+ degrees. Once the rear bar went on it pretty much solved the understeer issue at the track. Add totally worn rears, high track and ambient temps, and narrower tires and you're going to get that stupid little yellow nanny flashing at you.
Plus I still have the 285/30/20 which is more mass...so no problem!
08-06-14, 04:04 PM
#18
I was going to but I hate that the rear diameter is .4" smaller than stock.
Can you post it for forum record. I have looked high and low for pics and Im sure it will only hrlp a member here in the future. Thanks for your help buddy
I would agree and Im not saying that because I have oem sizes. I think they did the best they could with what they had back in 2006-2007 when developing the car. The PSS came out in 2011. Pretty sure engineers would have used the PSS if it was available. I think its going on the RCF. I did a ton of research on the real effects of unsprung mass on steering feel, suspension dynamics , and even wear on suspension and even though it all seems like splitting hairs it all adds up. Going from the RE050A to the PSS reduced unsprung mass by 18 lbs !!!! AND we still have another class of tire to go to. The Extreme performance tire category has the RE11 available and they come in the oem size and the upsized 245/275 combo. I was going to do the RE11 at oem size but when I saw the PSS on RedlineAZs car I was sold. The added grip and the better looks is a mod in itself
Can you post it for forum record. I have looked high and low for pics and Im sure it will only hrlp a member here in the future. Thanks for your help buddy
I would agree and Im not saying that because I have oem sizes. I think they did the best they could with what they had back in 2006-2007 when developing the car. The PSS came out in 2011. Pretty sure engineers would have used the PSS if it was available. I think its going on the RCF. I did a ton of research on the real effects of unsprung mass on steering feel, suspension dynamics , and even wear on suspension and even though it all seems like splitting hairs it all adds up. Going from the RE050A to the PSS reduced unsprung mass by 18 lbs !!!! AND we still have another class of tire to go to. The Extreme performance tire category has the RE11 available and they come in the oem size and the upsized 245/275 combo. I was going to do the RE11 at oem size but when I saw the PSS on RedlineAZs car I was sold. The added grip and the better looks is a mod in itself
08-06-14, 06:32 PM
#20
Lexus Fanatic
Thread Starter
Mine is stock, except for muffler delete (as far as I can tell) and there's NO way I could mash the throttle off the line without smokin' the rears. Even if I shift at redline it still spins into 2nd until I let off the throttle IIRC.
Plus I still have the 285/30/20 which is more mass...so no problem!
Plus I still have the 285/30/20 which is more mass...so no problem!
When you are right , you are right, BUT the RCF also weighs in at about 200 lbs more than the ISF.I think a 255/275 or 255/285 combo would be ideal, but we have to work with what we got or go to after market wheels and tires.
08-06-14, 07:23 PM
#22
ok so here is my experience with traction off of the line. my F is stone stock, I have the stock 255 size with Bridgestones (not sure of the series). A little background on me, I also have a 9 second Mustang, streetcar. The Mustang will annihilate the tires at will, any tire. I have to "drive it" to get it to come out of the hole on the street. Now that being said I have zero issues getting the IS-F to hook anywhere. IDK if its me just naturally controlling the tire spin with the throttle but My F launches pretty hard on the street and 1/4 mile track. I can and have annihilated the IS-F's tires out of the hole and out of a corner just for fun.
My Mustang the old "beater" coupe dubbed Rusty 5.0 (skip to 2:23 to avoid all the staging boringness)
My Mustang the old "beater" coupe dubbed Rusty 5.0 (skip to 2:23 to avoid all the staging boringness)
Last edited by v8sten; 08-06-14 at 07:27 PM.
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