Those tires aren't from a lawn mower what so ever, their golf cart tires most likely thats why their so big and if you guys would have read his post right you would have seen that he didn't say he was using them to race with he is using them as a road tire in witch case they would actually do allright. As for the rest of the mower good job is coming along nicely, and its glad to see another John Deere fan on the site.