how to allocate the Property Taxes portion of registration fee among 2 rental properties with one vehicle

I use one vehicle for 2 rental properties:

The total property tax portion of the registration fee for the car is $1200

The total miles for the car is: 4000

Miles for property A is 1000, business percentage:25%

Miles for property B is 1000, business percentage:25%

 

Under "the car and truck Expenses worksheet":

For property A:

4c Total Miles: 4000

5. Miles for business: 1000

8. Percent for business use: 25%

26. 1000*0.545 = $545

27. Additional Expenses:

d. The property tax portion of the registration fee for the car = $1200

e. less person portion = ($900)

28. Total Expense:  $845

 

For property B, everything is the same as what I did for property A

 

The allocations for the property tax portion of the registration fee seems all correct!

 

But when I look at Schedule A, 

5c) State and Local Personal Property Taxes: Turbo Tax put: $1800

Which is wrong, because Sch A (5c) supposed to be the non-business portion of the personal property taxes we paid on the car, which should be 1200 - 300 - 300 = $600, or half of $1200.

 

So, I am very confused about how to allocate the expenses on the "Car and Truck expenses worksheet" for the two properties with that use one vehicle.

 

Your help is greatly appreciated!

--Li