"FIrst, I ordered five wheels and tires with four TPMS sensors (no need for one in the spare) installed. I received them shortly thereafter and there's no indication as to which ones have sensors. I call them and Tomas asked me to send him pics of the valve stems, so I do. He has no idea either but suggests that I get them read in by a shop, and that will identify them. Took it to a shop and was told that all of the sensors were bad (turned out to be none of them were bad after I took it to another shop) so I wrote to Tomas AND to Discount Tire's Consumer Affairs email address. Three days later, still no reply or offer of help. I took the car to Merchants Tire and they were able to sort out the issues but zero reply from Discount Tire's Customer Service??? Unbelievable considering I spent $1,000 with them. Tirerack.com for all orders after this. Never again."