fellow ISF owner suspension opinions
03-25-16, 10:41 PM
#18
You got a GT or SP version ? which one is stiffer ? I like something that is stiff as 08 stock suspension or stiffer but not harsh. Can you upgrade to 12K for the rear ? Thanks buddy ?
03-26-16, 10:28 AM
#19
Old guy rant here, just gotta ask...
Why is it that so many consider "good looking" to be stretched tires fitted on heavy, larger diameter rims with offsets 20-30 mm lower than stock, with way too much camber needed to make them fit on their overly lowered car?
To these eyes it makes the car appear to be modded on the cheap, like it's owner couldn't afford to install parts that fit and work together to enhance both the looks and performance of the vehicle.
I know that many have spent lots of cash to achieve an "agressive stance". But just ask yourself how agressive is it to have to drive like your grandmother just to roll on our crappy, poorly maintained roads?
Looking forward to lively responses.
Dennis
Why is it that so many consider "good looking" to be stretched tires fitted on heavy, larger diameter rims with offsets 20-30 mm lower than stock, with way too much camber needed to make them fit on their overly lowered car?
To these eyes it makes the car appear to be modded on the cheap, like it's owner couldn't afford to install parts that fit and work together to enhance both the looks and performance of the vehicle.
I know that many have spent lots of cash to achieve an "agressive stance". But just ask yourself how agressive is it to have to drive like your grandmother just to roll on our crappy, poorly maintained roads?
Looking forward to lively responses.
Dennis
03-26-16, 11:43 AM
#20
Wow, talk about blowing the budget right out of the water! I just jumped in on the rr racing Penske deal with the rr racing usrs!
I thought very long and hard about it and too many times in my life I have cheaped out on stuff and wish I would have bought the better product! Not this time! What sold it for me was watching the rr racing ISF hang with the track prepped f430 and track prepped Elise. very impressive suspension and I am looking forward to my new purchase!
I thought very long and hard about it and too many times in my life I have cheaped out on stuff and wish I would have bought the better product! Not this time! What sold it for me was watching the rr racing ISF hang with the track prepped f430 and track prepped Elise. very impressive suspension and I am looking forward to my new purchase!
The following 2 users liked this post by Dnfwm:
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03-26-16, 03:00 PM
#22
Hey thanks bnizzle! I still want a set of headers. When it comes to the headers they both pretty much make the same power so I would rather have Whichever ones are cheaper. This dollar conversion really sucks! If any one has some for sale pm me a price. Or if a sikky dealer can pm me their best price, please feel free.
As for track mods, I have a 245/275 setup on right now that I will probably burn off in May at the first track event. They are about half worn right now, so I might as well burn them right off. At the first event, I'm going to see how the stop tech pads do with higher temp fluid. I will probably end up getting dedicated track pads. I am also going to have to way the pros and cons against Pilot super sports and R compounds and make a decision.
Rafi was saying that these penske's are so good that I won't need to buy sway bars, so I'm happy about that. Other than that, I will just play it out as the year progresses and see where I end up. I would love to have an os giken or a torsen, but that is for sure not happening this year.
As for track mods, I have a 245/275 setup on right now that I will probably burn off in May at the first track event. They are about half worn right now, so I might as well burn them right off. At the first event, I'm going to see how the stop tech pads do with higher temp fluid. I will probably end up getting dedicated track pads. I am also going to have to way the pros and cons against Pilot super sports and R compounds and make a decision.
Rafi was saying that these penske's are so good that I won't need to buy sway bars, so I'm happy about that. Other than that, I will just play it out as the year progresses and see where I end up. I would love to have an os giken or a torsen, but that is for sure not happening this year.
03-26-16, 07:35 PM
#23
Wow, talk about blowing the budget right out of the water! I just jumped in on the rr racing Penske deal with the rr racing usrs!
I thought very long and hard about it and too many times in my life I have cheaped out on stuff and wish I would have bought the better product! Not this time! What sold it for me was watching the rr racing ISF hang with the track prepped f430 and track prepped Elise. very impressive suspension and I am looking forward to my new purchase!
I thought very long and hard about it and too many times in my life I have cheaped out on stuff and wish I would have bought the better product! Not this time! What sold it for me was watching the rr racing ISF hang with the track prepped f430 and track prepped Elise. very impressive suspension and I am looking forward to my new purchase!
03-26-16, 08:51 PM
#24
I think there is only one version of HKS Coilovers for the IS-F: the GT4's. I think the 16K/10K setup is perfect for the ISF. Very neutral handling and also very comfortable for daily driving. It's still stiff, but no where near overdampened as the stock 2008 suspension. You can upgrade to 12K rears if you want, but I suspect you'll have a degree of oversteer with the stiffer rear springs.
03-29-16, 10:31 PM
#27
On the 2008 you should have really considered our rear toe link and LCA. Reducing rear bumpsteer is a huge improvement to overall handling stability at speed.
Regarding spring stiffness just remember that stiffening implies reduction in travel and travel is really what nets grip. We add spring rate when we are adding additional grip via tires, brakes or trying to target a new corner weight. Its a system that all has to work together and the suspension travel has an impact on steering particularly in the rear with the toe link sweep. Suspension geometry changes will be superior in the overall driver confidence and that is what matters most. As you upgrade one thing you surely find the next at the track. Just have fun and be safe.
Mike
Regarding spring stiffness just remember that stiffening implies reduction in travel and travel is really what nets grip. We add spring rate when we are adding additional grip via tires, brakes or trying to target a new corner weight. Its a system that all has to work together and the suspension travel has an impact on steering particularly in the rear with the toe link sweep. Suspension geometry changes will be superior in the overall driver confidence and that is what matters most. As you upgrade one thing you surely find the next at the track. Just have fun and be safe.
Mike
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Redefining Lexus Aftermarket Parts Since 2001
-- We are your Lexus suspension experts--
BCR - KW - PENSKE - OHLINS - HKS - GREDDY - STANCEPARTS
Links - Arms - SuperPro Poly Bushings - Solid Bearing Conversions - Motor Mounts
RB BBK's and 2P Rotors, G-Loc pads, Radium Fuel Systems
Custom Fabrication Design and Machining - Industrial 3D Printing - Laser Cutting
2018 USTCC Sportsman Class Champions - 2018 NASA ST5 National Champions
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