This item was purchased as an upgrade to the Quinny Buzz 3 stroller, replacing the front 'rubberized-foam' wheel.
The Buzz 3 is, hands down, the best stroller for our purpose; the stroller fit perfectly into the back of our Jetta Wagon that was easily secured to the side so that there was plenty of room for the family dog. One issue, however, came about while shopping. Generally, many stores have smooth, painted concrete or similar flooring and the issue was with the front wheel. As we'd navigate the shops, the front wheel would not have enough friction to keep the front wheel facing in the proper direction; the wheel would slip and not realign with the stroller direction making it difficult to manovre. This was compounded when it was covered in dust/dirt from the floors.
With the pneumatic wheel/tyre assembly, however, this is NO longer an issue! This was the perfect solution to our problem that also improved the traction and stability of the stroller while walking outside on gravel trails or side-roads. It has really changed the entire persona of the stroller and I must admit, it's probably the best purchase we could have made for this stroller.
If you buy/have the Buzz system and love it, you should definitely consider this upgrade a necessity. In fact, I feel that Quinny should make this item standard on all models. Ditch that rubber-foam front tyre and get these on there!!