better safe than sorry. my head is ok, same as my client's driveways. personally i'd make an open face notch and bring this tree slowly to the ground without cribbing or tires, concrete looks fine, tree is small, just back up your chipper, cut, chip and go. Thats me and if I'll find one day that paving guys run out of concrete on my client's driveway, thats my problem, my reputation and my money. Why I don't want Groundworker to find out hard way how honest are pavers in his area? must be this head problem you mentioned.OTG is right a little cribbing will go a long way whit that small tree!!
As for hauling around ply wood and tires for somthing that small
i think somone needs there head examined!