I8ABMR

Just got these from the track photographer from AMP

JDMV8

iTrader: (6)

I8ABMR

chris07is

iTrader: (10)

Another nice run tammer. This reminds me of auto club speedway...it funny ur enjoying ur self hitting triple digits..lol...

lexicon72

Posted this one back in July....took on a number of Corvettes at the National Corvette Museum Motorpark in my all seasons lol.

I8ABMR

lol putting those oem pads to the test !


Nice video !! Track looks really nice too. Brand new and wide. Even the rumble strips looks fresh. The tracks in AZ are ancient and have been beaten down by the sun and heat

EDU

Damn, nice thread..... I might have to take my is250 to the track this summer.

I8ABMR

Do it. These Lexus sedans can take a beating. All I would recommend is to absolutely change your pads and brake fluid . The ISF comes with the track stuff.

FIGS

iTrader: (11)

Here is a vid from 3 yrs ago in the snow.

https://vimeo.com/57722411


Here is our Ohlins Road and Track shock testing on the tight track

I8ABMR

Very cool . Mike that track you did the coil testing on looks tighter than tight. Car was getting a little lose in the rear toward the middle . Was it too stuff in the rear or was it just older tires ? How did you address the loss if grip on exit ? Stiffen front or loosen the rear . My concern with coils is the adjustability. Kind of a double edged . Can be good if you know what you are doing like you do but wonder if many have them set correctly . Could be lower and nicer to look lat but wonder if they always handle better . Example
Imagine the average guy who buys bc coils for looks . Sometimes I wonder if my car still handles better stock .

FIGS

iTrader: (11)

The IMI track is pretty tight for a heavy car and we were on performance street tires, old 275/35 star specs with really light wheels (18lbs). For everyone's criticism the BC coils are still a monotube shock with multiple valve shims and a lot of range if implemented correctly. You can actually use Bilstein shims to revalve them and get a lot of dynamic range out of a budget shock with the proper spring rates. Most traction has to do with smooth power application relative to the available traction. With heavier wheels and 305 tires, we cannot spin the rear as readily but the suspension setup is also pretty toe neutral and returns to center predictably. I always test the limits of traction to see how the suspension responds to rapid changes to input and as much as people focus on shocks alone, the suspension geometry is far more important to overall stability and bite in a corner. You can soften the rear but if you have factory toe geometry you end up scrubbing tire and losing grip. No 2 drivers will approach a corner identically and the throttle modulation is very important. One issue with the F is the throttle response due to TBW on tighter tracks. Makes me want a manual tranny.

I8ABMR

Got you . Did not mean to bash the bc coils . Was just using them as an example since they are probably the most common

I8ABMR

Super excited ! Just got these in tonight

I8ABMR

bump !! Come on guys. Some of you guys are holding out.

If you have video to add please do.

Saw an amazing clip of a guy in an ISF at Chuckwalla . I think Im going to make the drive out there in March. After seeing how smooth open and flowing it is , I AM SOLD !

CHECK THIS OUT ! great video and he does some drifting at the end. Pretty cool !!

mikersoft

iTrader: (1)

Nice! I prefer that camera view over those mounted on the dash or mirror. Here's a video I put together from the RR Racing track day at New Jersey Motorsports Park. It includes all of my 2nd session of the day, & some of it is kinda boring to watch in comparison to that one from Chuckwalla.

-Mike