Again, the bigger tires the faster!!!
Auto Exec Miata(ND) : 2332 lbs, tires: 195/195, Time:????, Score: 292
Front 2.5K : (2.5 * 0.80) / (2332 * 50%) * 1000 = 1.715
Rear 1.3K : (1.3 * 2) / (2332 * 50%) * 1000 = 2.230
TEIN Miata(ND) : 2332 lbs, tires: 205/205, Time: 27"910, Score: 290
Front 7K : (7 * 0.80) / (2332 * 50%) * 1000 = 4.802
Rear 5K : (5 * 2) / (2332 * 50%) * 1000 = 8.577
LEG Miata(ND) : 2332 lbs, tires: 215/215, Time: 26"972, Score: 296
Front 6K : (6 * 0.80) / (2332 * 50%) * 1000 = 4.116
Rear 4K : (4 * 2) / (2332 * 50%) * 1000 = 6.862
DECK Miata(ND) : 2332 lbs, tires: 215/215, Time:26"915, Score: 289
Front 7K : (7 * 0.80) / (2332 * 50%) * 1000 = 4.802
Rear 4K : (4 * 2) / (2332 * 50%) * 1000 = 6.862
Again, for Japanese dampers, 6/4K could be the most stiff springs they could handle... Above that, even Auto Exec which is as soft as OEM feels better...
PS: These modified Miata were tuned by a bunch of professional engineers and racing drivers. So, most of users should even lower the spring rates. However, if European dampers are adopted, those high spring rates should become acceptable in the cars even though the setting are a little less than PERFECT, I believe!!!
(GSF's front is stiffer but M4 Competition's rear is stiffer)
