M030 springs

[geetee]

Regarding the front height there is normal standard suspension with US M030 10mm lower and row M030 is 20mm lower I believe. rear height is same except row m030 is 10mm lower

I would go H&R springs but they are so inconsistent....you claim .75 inch H&R states 1 inch. I've seen quite a few that have dropped about 1.5 inches. If i were to do both front and rear, it's fine but I don't want to change the current rear height. If I go H&R front's and if it drops 1.5, it'll be too much of a rake.

[edc]

Originally Posted by geetee

Regarding the front height there is normal standard suspension with US M030 10mm lower and row M030 is 20mm lower I believe. rear height is same except row m030 is 10mm lower

I would go H&R springs but they are so inconsistent....you claim .75 inch H&R states 1 inch. I've seen quite a few that have dropped about 1.5 inches. If i were to do both front and rear, it's fine but I don't want to change the current rear height. If I go H&R front's and if it drops 1.5, it'll be too much of a rake.

In the UK at least H&R sell different springs for different amounts of lowering ... for 986 they market both -10mm and -30mm which would tie into your inch figures.

[BER]

I also installed new Bilstein Sport struts along with the H&R Sport springs during my suspension rebuild.

To clarify, the front dropped about 0.75" and the rear dropped about 0.50". IMHO, it gives the car a very nice rake. I do need to be more aware of curbs, steep driveways, etc.

The documentation that came with the springs claimed a 1" drop, but as I said, my front only came down 0.75". The new Bilstein Sports could have had some impact on the amount of lowering.

[steved0x]

Originally Posted by BER

The documentation that came with the springs claimed a 1" drop, but as I said, my front only came down 0.75". The new Bilstein Sports could have had some impact on the amount of lowering.

I wonder if the age/wear of the existing springs could be a factor in the amount of drop? I have US M030 suspension but my heights are closer to ROW. I have 131,000 on the springs and maybe 2-3K on the Koni FSD dampers I have fitted. If I were to go with lowering springs I would expect to get less drop than advertised since I am already around 10mm lower, I would have to dig out my measurements to be sure.

[BER]

I wonder if the age/wear of the existing springs could be a factor in the amount of drop?

That sounds logical, but I'm not an expert. My car had the stock Base suspension when I rebuilt it with the Bilstein's and H&R's. It had 51k miles when I did the rebuild.

My goal was not to lower the car, but to stiffen up the suspension. I accomplished a stiffer. firmer ride and got a little lower stance as a side benefit.

[pidj]

Does anyone have Porsche documentation that states a difference between M030 and ROW M030? This difference seems to be more anecdotal that fact.

[jakeru]

Originally Posted by pidj

Does anyone have Porsche documentation that states a difference between M030 and ROW M030?

http://986forum.com/forums/534014-post5.html

M030 is referred to in there as "sport".