Hi Gary.
Have you ever tried a Renault Scenic for size? My wife suffers with severe backpain & arthritis in both knees, I suffer with similar problems in the knees. We both found getting in & out of "normal" cars like the Mondeo we had until Renault came out with the Scenic. Once we tried it we were sold, its just a matter of stepping in & out, no bending & struggling to get upright after a long journey. No problem towing either other than I explained in my remarks in the "Towcar" topic re Renault's towing weight "jungle"
We tried all the popular 4x4s and none of them had a front door aperture as high as the Scenic measuring from sill to top of door. We are now on our 2nd Scenic and will stay with it until some othe manufacturer brings out a model better for getting in & out!!!
Tankie