Does anyone here know the coil weight on the factory coil springs for a 2012 Prius C I ? I went with 17" rims and when I have more than 2 passengers or someone about 250 lbs my rear tires will rub a little when I hit a dip. I need to stiffen up the suspension and adjustable's are a little too expensive right now. I don't want to go too far and have a nasty hard ride. Thanks for any info.
