Had mine to 162 several weeks ago (nice, straight & long 2 lane) & it just stopped pulling from that point on so I'm assuming that my speedo must be off by a few mph's. Whatta ride! The car stayed on the pavement though it started to get that "I'm flying" feeling when I'd hit a bump over 140 or so. That was kinda unnerving so I doubt I'll be doing that again! 'Twas a lotta fun though!!