What's your average speed mowing. I know there are mowers including mine that will run 15 but on the average yard I probably average between5-9 mph. As some Dixies guys told me there not alot of lawns you can run 15 around here. I was mowing (more like bushogging after 6 days of rain) 2 week lawns today probably only going 5-6 mph on the Lazer for a good cut. I could run close to wide open on a flat, football field type yard if it were smooth and mowed once per week but not on my lawns. I do go full speed blowing clippings.