The tyres are 14", but the rolling diameter is huge.
The 15" TB15 that people use on the front is 224mm section and 612mm rolling diameter.
The XWX 205/70/14 has a smaller 209mm section, but a much larger 644mm rolling diameter.
I know that similarly shod GT4 Ferraris don't have much lock, so maybe this 70 series tyre diameter is the reason? 'Footwells right on the front axle line, and all that.
A lot of 308 owners change to 16" rims and lower profile tyres, but I love the period look of the 14" tyres on those and the Stradale Stratos.