Amilcar - Amilcar C4
The Amilcar C4 had a 57mmx95mm engine (just over 1,000cc) putting it in the French 6HP tax bracket. It was referred to in the period French magazines also as the Amilcar 4C. The C4 was available from 1922 and stayed in production until 1929. The main alteration during this time was a need to provide a rear axle differential half way through its production life! The Amilcar C4 was a popular model, economically priced with low running costs - it was very similar to the Amilcar CC and CS apart from being given a longer wheel base.
Tyre size for the Amilcar C4 was originally 700x80. In fact all these early Amilcar models ( types CC and CS ) were fitted with this same 700x80 tyre size, the imperial numbering of which was quoted as 26x3 size. Blockley produce the best 700x80 tyre with a robust sidewall and suitable for motor cars (as well as suitable for motorcycles). We have also been reliably informed that the larger 710x90 tyre was also an option with the C4. The C4 was also listed with tyre size 715x115, but the only tyre available in this size is the Waymaster, a range made in 3 pieces with the beads glued on, so really they should not be used in our opinion. The Blockley 710x90 tyre size is the same diameter, so by far the safest solution is the re rim any of these wheels with 710x90 rims. See the full details of the 700x80 / 26x3 tyre, as well as the 710x90 tyre size below:
