Solving Maximum Acceleration for 4WD Car on Dry Road

[jhk_1945]

A car with four-wheel drive has a mass of 1000kg. Its weight is evenly distributed on its four wheels. The coefficient of static friction with the dry road is 0.8. The car starts from rest on a horizontal surface. What is the greatest forward acceleration that the car can ahcieve without spinning its wheels?

I simply said F = mu x Fn
= 0.8x1000x9.8=7840N

and divided that by the mass to get 7840 / 1000 = 7.84 m/s^2

But I feel that this is isn't correctly answering the question. Can anyone please help me out!?

Thanks

 

[blackwizard]

I don't see what else u could do. Seems perfect 2 me