I will try to measure my L185F this weekend but may not be too accurate since they will be on the tractor.
I don’t think that this will help since my tractor is two wheel drive and I think yours is four wheel drive but
Front tire size is 4.00-15 PCD is close to 5.75 inch center hole is about 3.5 inch
Rear tire size is 9.5-24 PCD is close to 6.0 inch center hole is about 4.0 inch