Replaced the Firestone Coil-Rite Bags which were hard to install and maintain with the Coil SumoSprings. I put in the measurements and they determined I should use the CSS-1145 and the were exactly the right size. No overlap and they went in with no problems. We like the Santa Fe but the ride was a little soft and with three passengers would bottom out when we went over speed bumps. This is no longer a problem.