VOL — This is an Original Equipment (OEM) designation indicating the tyre was developed to meet Volvo’s specific standards and performance requirements
ELT — This stands for ELECT™, Pirelli’s marking for tyres designed for high-performance electric and plug-in vehicles, forming part of their “Perfect Fit” strategy
So a tyre marked VOL /ELT /CN is an ultra-high-performance summer tyre:
Custom-designed to Volvo OEM specifications,
Electrification-ready (electric/plug-in performance),
Features noise-cancelling technology for improved comfort.
From Pirelli’s official materials for the 255/45 /R19 PZ4:
The tyre includes ELECT™ technology tailored for electric vehicles
The overall P Zero (PZ4) family offers:
Customised inner and outer tread design,
High-silica compound for superior wet grip,
Low rolling resistance and optimized pitch sequence for reduced noise and better mileage