For 1985, the MP4/2 was updated with cleaner aerodynamics and redesigned wings (to comply with new regulations which banned the "winglets" on the rear wings of the cars which had been in use since 1983) and was dubbed the "MP4/2B", while Porsche refined the TAG engine with improved power ( in race and in qualifying) and fuel consumption. The suspension had to be redesigned after McLaren were forced to switch from Michelin to Goodyear tyres when the French company pulled out of Formula One. However, the competition had more or less caught up. Michele Alboreto in his &lt;a href="Ferrari%20156/85"&gt;Ferrari 156/85&lt;/a&gt; fought Prost for most of the season, until McLaren's greater reliability and their superiority in the high-speed circuits that followed told in both championships. Prost won his first championship with 5 wins and wrapped up the title with two rounds still to run by finishing a calculated 4th in the European Grand Prix at Brands Hatch (Prost admitted that he did not like 'driving for points' like he had at Brands and the previous race in Belgium, but after losing the last two championships by only 2 and ½ a point respectively, did not want to risk losing for a third time). McLaren claimed their second successive constructors' championship, scoring 90 points to Ferrari's 82, with Williams-Honda and Lotus-Renault tied on 71 points, though Williams won four races to Lotus' three.