Copied spring rates from another post.
You can see most lowering springs have similar front to rear spring ratios. It's most likely due to the stock damper valving, which restricts your spring rate options. When you have a custom shock, you can valve your springs to whatever rates you want...
Forgot to subtract the unsprung weight. Fixed the original post.
I think you'll typically see non-aero street tire cars aim for 2-2.5 Hz. The "black art" seems to be the +/- 0.5 balance between front and rear.
I think most OEMs aim for the "flat ride" concept, which promotes comfort.
Perhaps...
This thread will be used to discuss suspension frequency theories.
Common suspension frequencies:
1.0 Hz - passenger cars
1.25 to 1.75 Hz - sports cars
2.0 to 2.5 Hz - autocross and racecars with low downforce
2.5+ Hz - high downforce racecars
To calculate the GR Supra's factory suspension...
the lower quality stuff from BC, HKS, and Tein don’t ride well due to poor valving. But they’re also much cheaper so you kind of get what you paid for. They’re meant for the stance crowd.
Ohlins Road and Track are in the middle. They ride well but are about 2k cheaper than the MCS/JRZ/Penske...
not uncommon for cars to get sold to auctions. dealers also pay interest on the cars, so the longer they have it, the more it costs them.
nobody knows the real reason why the original owner sold and we can only speculate. based on the carfax, it looks like the supra was sold to a porsche dealer...
You mentioned you'll only see a few track events per year. MCS, JRZ, and Penske are a bit of an overkill for a mostly street driven car. One step down would be Ohlins Road and Track. Their spring rates are a bit softer and should be better suited for street use. Not to mention it's harder to...
Can you order through MCS directly?
Divorced means the spring is separate from the shock, similar to the OEM setup. Seems most just switch to the traditional non-divorced setup for weight savings.
The OEM was engineered for a divorced setup, so some may have load bearing concerns. This may...
if your supra is your daily driver, then you may want to consider it. if not, don' t bother.
the supra's driver assist package is pretty old compared to current bmw's offering. many cars offer better implementation of their own drive assist package.
probably bump the tire pressures up by 2-6 psi so that you minimize eating up the shoulders of the tires. this is assuming everything is stock, including tires.
i think most like the immediate benefit of less body roll and quicker steering. they're also very cheap and easy to install. at least for the front.
most don't realize it changes the balance between the front and rear tires, which results in more or less understeer or oversteer...