I have been using the Toyo R888 this season, first on an RF98K Van Diemen FF and now on a PRS Club Ford (Crossle copy) and I have some questions about what can be inferred from the appearance of the tread wear pattern/s.
Please refer to the two images attached to this post, the first one is the front tire and the second the rear, both right side, the most heavily loaded for this track. Click on them to get a larger image.
The photos were taken just after a race at Thunderhill, perfect weather and track conditions (75 degrees air temp, light clouds). I was running 3.1 degrees of camber front and 3.9 degrees rear, the max I could get from the adjustments to the car. We had started the weekend with less camber and had been steadily adding it as the weekend progressed to see what resulted.
While the lap times steadily dropped that may have been to due to better braking on my part, abandoning any idea of getting information through the brake pedal (Toyos seem to give very little feedback) and just guessing as to braking points.
What I would like to get input on specifically is how to interpret the wear pattern. As you can see we were getting a good feathering pattern over about 2/3's of the tread width, starting from the outside in. The inside edge never got feathered at any camber. Need I go to about 6 degrees of camber to get the entire tread on the track or am I grossly missing something?
We're still trying to figure out what the lips of rubber that is created at the edges of the sipes means.
Thanks in advance for any and all input.
Tom Duncan
Please refer to the two images attached to this post, the first one is the front tire and the second the rear, both right side, the most heavily loaded for this track. Click on them to get a larger image.
The photos were taken just after a race at Thunderhill, perfect weather and track conditions (75 degrees air temp, light clouds). I was running 3.1 degrees of camber front and 3.9 degrees rear, the max I could get from the adjustments to the car. We had started the weekend with less camber and had been steadily adding it as the weekend progressed to see what resulted.
While the lap times steadily dropped that may have been to due to better braking on my part, abandoning any idea of getting information through the brake pedal (Toyos seem to give very little feedback) and just guessing as to braking points.
What I would like to get input on specifically is how to interpret the wear pattern. As you can see we were getting a good feathering pattern over about 2/3's of the tread width, starting from the outside in. The inside edge never got feathered at any camber. Need I go to about 6 degrees of camber to get the entire tread on the track or am I grossly missing something?
We're still trying to figure out what the lips of rubber that is created at the edges of the sipes means.
Thanks in advance for any and all input.
Tom Duncan
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