OPTIMIZED TYRE FOR A VAN

The invention relates to a tyre for a van and aims to improve the trade-off between rolling resistance and antagonistic performances such as the various types of grip (longitudinal/transversal, on dry/wet ground) and the wear. The tread (2) comprises raised elements (22) having a radial height Hs at least equal to 6.5 mm and at most equal to 9 mm, and having a volume groove rate TEV at least equal to 18% and at most equal to 23%. The at least one elastomeric mixture of the tread (2) has a glass transition temperature Tg at least equal to -18 DEG C and at most equal to -21 DEG C, a Shore A hardness at least equal to 64 and at most equal to 65 and a dynamic loss tg[delta] at 23 DEG C at least equal to 0.15 and at most equal to 0.27. The tyre also has an intermediate layer of an elastomeric mixture, having a dynamic loss tg[delta]a at 23 DEG C at least equal to 0.05 and at most equal to 0.15, at most equal to the dynamic loss tg[delta] of the materials of the tread.