Toying with the idea to lower the car when I get the wheels changed out. I won't need to back into my driveway in about a week and could get away with the lowering, at least for driveway purposes. The thought of being able to adjust the height is appealing, but does the camber need adjustment at the possible different height that an HAS would provide? Lots of rough roads here, just thinking is something in between the VAP and 0 worth the trouble?

 

You can adjust the height of most springs on the F type with a grinder. But only to lower. I haven't found that method works for increasing height

VAP springs are a true progressive spring, the coils gradually increase in diameter from the top down. That design should give you minimum loss of ride comfort when lowering your car. From some of the pictures I've seen the KW HAS is spring is not, and seems a bit gimmicky to me, but I have no 1st hand experience with them.

 

Cutting/grinding stock springs to lower the car is book definition of ricing. Show some pride of ownership and get proper lowering springs.

To me, F-type is already too low to the ground as front lip clearance is only couple inches. Even lower would result in inability to clear speed bumps and such.

 

No tunes, no lowering of cars. The fun police are out in full force this week. Is there anything you consider an acceptable modification, or should we all just talk about our factory spec cars?

Btw, the cutting spring comment was an attempt at humor as the OP was inquiring about adjustability. And for the record, I have VAP springs on my car, so I was sharing experience about a modification I have done that might be helpful to the OP, not sure your comments are...

 

The KW springs are adjustable in height using a threaded collar to raise & lower the perch point of the spring. I had a full set of KW coilovers on my last car and they were excellent.
Only downside of the KW's for the F-Type is that they only lower a maximum of ~7/8", and they are expensive.
Still... highest in quality and mine were guaranteed for life (unsure if they still offer that)

 

About $1100 for Height Adjustable Springs from KW:

https://www.vividracing.com/has-jagu...152538140.html

The VAP lowering springs are about $700. An extra $100/corner for the HAS.

 

If I was going to spend $700 for springs, I'd happily spend the extra few hundred for the KW kit. Full adjustability with factory dampers is the best of both worlds.

 

Can't go wrong with the VAPs. I've been very satisfied after installing mine. Ride quality is virtually unchanged. I can even still drive it in Normal suspension mode and the springs do well enough to keep up around the city. If I were to have gone any lower I'd be scraping the front chin spoiler on everything in town. Having to adjust ride height manually with something like the KWs was not something I wanted to bother with.

 

I don't see any specs on the springs for the KW kit, but typically springs on adjustable set are linear. The VAP Springs are progressive which will translate to more compliant ride quality over different surfaces. Linear, well, will be linear so they will be the same everywhere (which means if they feel rough to you, they will be rough all the time).

Linear is typically a good option in you have good smooth roads in your area all the time and/or you track the car a lot. Otherwise, 90% of the people on the planet will be much happier with progressive rate springs.

 

The KW HAS kit is progressive.

 

Where is that documented?

 

Actually, I'm wrong. Take a look at page 9 in the document below.

https://www.kwsuspensions.com/extras...Q/25331003.pdf

It looks like the spring used is the below which is a 120 spring rate. Unbelievable soft... I almost don't believe it.

https://www.kwsuspensions.net/produc...rings/60110177

 

I believe KW uses a small spring to keep the main spring tight in its perch if the suspension gets unloaded.