Greetings all, first post here. I've been to 3 or 4 Level 4 days of School, ride a heavier Sport Touring bike on the street, Yamaha FJR1300. The guy I ride with has the same bike, we've been to Superbike School together, every time. Our track lap times are very close and on the street we ride extremely similar. At no point does either of us really leave the other one behind. We ride flat roads to get to the mountains but spend most of our riding on mountain and twisty roads.
We were both running the same tires, Pirelli Angel GT's and have been for 50,000 miles for me. Back in August, I replaced mine because the sides of the rear tire were worn out. The front tire was rounded in the wear profile and it looked like a new tire, just with less tread. Nice even wear, no issues, probably had 2,000 miles left on it.
The other guy changed his tires this week because his front was worn out. It had a trapezoid shape on the front tire. I know they are dual compound tires and I've seen them wear like that before. It was pretty severe.
We weigh about the same and our suspensions are setup the same and I'm just curious why our tires wear so different riding the same roads on the same bike. My question, is that riding technique differences or something more along the lines of tire pressure. He's been running about 3-4 lbs less on the front than I do.
We're doing a couple more days of level 4 in the spring so if it's technique related, it would be nice to know so we can work on correcting it (whichever one of us it is) at those level 4 days. I wonder if he's carrying more speed into the corners than I am, or perhaps he's braking harder than I am? It has to be a small detail because we are always so closely matched on the road.
Thanks in advance!