Joined: Jun 2005
Posts: 9,625
Likes: 40
From: South of Raleigh, North of New Hill, East of Harris Lake, NC
Bikes: Specialized Tarmac, Specialized Roubaix, Giant OCR-C, Specialized Stumpjumper FSR, Stumpjumper Comp, 88 & 92Nishiki Ariel, 87 Centurion Ironman, 92 Paramount, 84 Nishiki Medalist
I'd go for it. When it comes to MTB's, I'd risk buying a bike that might be small, but not one that's too large. At 5' 8.5", I used to ride a 17" Specialized, but my 6' son rides the same bike. I've since moved to a 15.5 inch frame.
You can make a small frame grow with stems, seatposts etc, but shrinking a bike is a problem. Besides, as pablosnazzy said, that should be your size.
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