This Blockley superior inner tube, with rubber valve stem, is marked for tyre sizes 450x19 and 500x19 for the 19" rim only. Not to be confused with the usual low quality multisized offerings from the Classic tyre wholesalers.

The Blockley range of inner tubes, produced on our own Blockley tooling, with a generous thickness, are unlike anything else available, which is why we make them for use in our own tyres. Not only are they made using the best material Butyl, but with the correct thickness as they would have been in period, the Blockleys are often double the weight of what your alternatives sold elsewhere are.  We manufacture this inner tube only for the 19" wheel size for 4.50x19 and up to 5.00x19 tyre sizes. A 3.50x19 has it's own tube. The 4.00x19 again its own seperate tube. For 18" wheels and 4.50x18 or 5.00x18 tyres, Blockley produces their own particular inner tube. All this is because Blockley do not do the multisize thing that Classic car owners have had to put up with, which has come about undoubtedly due to the cost cutting from the big suppliers. Because 18" and 19" are the more popuar tyre sizes, you'll find the 18 and 19 inch tubes available elsewhere by the classic tyre "experts" are actually the same tubes! For interest, because we sell our Blockley tyres and Blockley Superior tubes direct to the end user (or garages / restoration shops) and not using the Classic tyre Wholesalers with their mark-ups, it means the best tubes in the world by Blockley cost little more and often less than these cheaper made multisized alternatives, yet these Blockleys are perfection. There is really no good reason for using any other brand of tube!