I AM A DISABLED SENIOR LADY, I AM A STROKE SURVIVOR AND HOMEBOUND. MY DAUGHTER ORDERED A "17" TRANSPORT CHAIR (STEEL) IT IS THE BEST ONE THAT I HAVE HAD, BUT THE TIRES ARE NOT THE NON-MAR TIRES THAT I NEEDED . THE TIRES ARE BLACK AND IF THEY COME INTO CONTACT WITH ANY DAMPNESS, IT LEAVES BAD MARKS ON MY CARPET. I RECENTLY MOVED INTO A NEW PLACE AND I AM READY TO CALL A COMPANY TO SHAMPOO.IT LEFT A MESS AT THE PREVIOUS PLACE.I HAVE E-MAILED THE COMPANY SEVERAL TIMES, I ONLY NEED 4 NEW TIRES THAT ARE NON-MAR, I THINK THE GREY ONES ARE NEOPRENE..THE CHAIR COST $189.00 read full review »