Having just grabbed a tape measure I can confirm its pretty close to the 820mm. With that said though sitting on the bike it doesnt feel even close to this when compared to other bikes of similar seat height (ie current Triumphs).
I'm 5'6" as well and I had the dealer lower it for me before I took delivery.
A GSXR linkage was used in the rear and the forks were slide up a coresponding amount. I'm not flat footed but darn near. The narrow front part of the seat make the TNT easier to get both feet down.
One thing worth checking is the chain adjustment mechanism - if the spindle is at 12 o'clock vs 6 o'clock, the ride height is a bit higher. Or lower. Also some shocks have a degree of adjustment. I think the TNT is forgiving for the shorter rider because the seat and tank are so slim where they join - your legs can go straight down, not out to get around the tank.
Cheers Robin, I'll have a look at that over the weekend.
I see you're a Londoner too, where do you get your tnt serviced? Although I'm in north London I'm probably going to use Reddog in Kent as they are the nearest dealer to me that appear to have a decent reputation.
No Robin, I've got an 07 Cafe Racer, with just 600 miles on it. Bought it from Pegasus in Reading. They are pretty useless and just happned to acquire the bike through the trade. The first owner was someone is south wales according to the log-book.
I'm now dealing with Reddog in Kent, they seem pretty good. Just waiting to hear back from them with regards to pricing for a termi-exaust solution that won't invalidate the remainder of the 2-year warranty from Benelli.
Looking forward to getting the bike checked out by people who know the Tnt inside-out, I'm convinced she's not breathing and drinking as well as she could be.