Do the math. ( I havn't) but the 29's contain a LOT more of that cushioning air then the 26'ers. I loved my 26's on my S-7, and when I went to 29's, Airstreaks both times. I was surprised how much more better

they were. Walking an area just landed and seeing a big rock, first thinking I must have missed it as I didn't feel anything,. Then seeing by my tra ks that I had rolled right over it really showed me how good they are. Both sizes are great, the larger size is simply greater! My fear is ABW decides to offer 31" Airstreaks
