Helped me out when I had a problem
I had a road bike, whose tires were exactly 1" wide. I bought the regular clug, but my bike fell a couple times. I took photos, and customer service helped me adjust my mounting height. I also upgraded to the clug pro since my tires are so close to the narrowest limit for the clug roadie. I had to buy the upgrade, but it's been worth it to store my bikes in my small apartment.