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1991 964 HR Coilovers with HR dampers vs. HR Springs + Bilsteins HDs

Suspension and Steering

Vehicle Information: Model: 964; Year: 1991; Body Type: Coupe; Total Mileage: 56000;

I may be to the right of the decimal point on this, but I gather that two HR lowering spring solutions exist to get the car similar to the ROW M030. Both rely on progressive springs. The first is what H&R calls a coil-over set with HR branded dampers. The 2nd solution, which also appears to be a very popular solution, is HR lowering springs that are matched with Bilstein HDs that are valved for the range of spring applications. Other than the dampers, the Coilovers appear to be a much stiffer solution as well. The H&R 964 Coil-overs appear to be Front 250-285 lbs/inch and Rear 265-285 lbs/inch. The H&R 964 springs appear to be Front 190-255 lbs/inch and Rear 220-265 lbs/inch. When compared to stock Front 158 and rear 189, the stiffer coilovers appear to be a big jump from stock and maybe, too much for my combination street, Autocross and Novice DEs. By comparison, I followed your excellent advice on lowering my 993 to ROW M030 using Porsche ROW M030 components -- the results were nothing less than spectacular in the overall handling and driveablility improvements. It's just snappier. So, I'm trying to duplicate same with the 964. Long winded preamble, but any user experience and advice regarding the stiffer, H&R Coilovers vs HR Lowering springs would be a enormously helpful.Regards

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