Hey, I have been looking for a while for an affordable bike roof rack for my 2015 VW Jetta. I'm looking to place 2 bikes on the roof of the car. Both bikes are 27.5 but I have one with oversized 2.8 tires on it. And suggestions for a rack that would fit the factory T-slot rails or clamp around them? Would prefer to keep the wheels on the bike, but anything suggested will be greatly appreciated.