I have been seeing brown (dry) strips on several of my lawns. They match the width of my mowers back tires so I know they are from my mower. What is this caused from??? It has been very hot and dry here for the last several weeks (had rain and cooler temps for the last few days though). At first I thought maybe I had been cutting to soon after some kind of chemical apps and caused the grass to be crushed with the chemical and made it burn but then I saw some lawns that didn't receive any treatments at all with the same problems. Could it be that due to the dryness of the grass that the weight from my wheels further damaged the grasses?? Anybody else ever experience this?