I wouldn't take a vehicle up that road (except a rental) because one of it's claims to fame is that automakers have used it to do extreme testing of their new vehicles since the 1920's or earlier. Pike's Peak and Death Valley are usually included in road tests of the durability of their designs.
One good thing, it is now all paved. It measures 12.42 miles (19.99 km) over 156 turns, climbing 4,720 ft from the start at Mile 7 on Pikes Peak Highway, to the finish at 14,110 ft, on grades averaging 7.2%. $40 a vehicle.
Years ago I hike up to the summit and I've ridden the cog railway a couple of times. I'd not subject any vehicle I value to that road when there are other ways to get to the top.
Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI