Sorry for this question i just got confused? I thought people use Higher spring rates in front than the rear?

I saw an advertisement for koni/gc and they suggested:

Street Use Only: 290/350Lbs
Street/auto-x: 350/380Lbs
Street/Road Course: 380/450Lbs

Is that 290f/350r? Is is it backwards?

Also will 400f/350r koni/gc w/ Tophats be okay for 2-2.5 inch drop for DD and future track? thanks

 

Why not ask the advertiser/vendor why they are suggesting the rates they do? What is their reasoning?

The fact is, all sorts of people use all sorts of spring rates and combinations for many different reasons. There are as many reasons as there are combinations of drivers, cars, other mods and driving applications. Generally, having higher spring rates in the rear of most Civics and Integras will make the car easier to turn around a corner, because it counters the understeer that they have from the factory.

You haven't told anyone what you drive. We can assume its a Civic, but you might want to be more clear if you're going to ask a question like this. And unless you're building a show car, worry about performance first, and "drop" later.

 

Those are retarded recommendations for street use. Higher rear spring rates could cause unpredictable handling on the street, and an inexperienced driver could end up in a ditch with a setup like that. It also makes for a noticeably harsher ride.

As for your setup, you will not need top hats for a 2.5" drop with 400 lb. front springs.

 

It's a 4door civic SIR. I was just wondering which one eliminate or reduces understeer, stiffer rear or the other way around like what most set-ups i see.

Another question, 400f/350r is also equivalent to 7kgf/6.25kgr? So the tein SS comes with 8kgf/6kgr or 450/330? then the tein SS will be more stiffer if im not mistaken?

 

I noted the spring rate of the Tein SS in the catalog yesterday and they basically come with a 6kgmm-f/3kgmm-r

and Tein Flex with 9kgmm-f/5kgmm-r

 

oh? is that so.. can you get custom spring rates with tein or no?