I got the tire and it did NOT fit under the seat. I took out the third row seat and set the tire flat on the floor. I then got some chain and a hard shackle (D ring w/pin) and wove the chain through bolt holes of rim and through the seat anchor in floor. Hi lift jack is secured the same way. I don't want the heavy stuff flying around in a rollover or accident. I used a factor of 5 for weight of items to size capacity for chain and hard shackles. It's not elegant but it is certainly functional! I hate that I lost my 3rd row of seating, but those stupid swing out hitches that mount to your hitch were not the best solution IMO. They rattle and I wouldn't feel comfortable towing through it or doing recovery with it. My opinion.