I don't think it will fit. According to @Steve01088, the tires rub against the plastic wheel arch when using 255 tires with a 15mm spacer per side. However, if you use 265 tires with a 10mm spacer, the ratio is the same. The tire is 5mm wider on each side, but the spacer is 5mm narrower. Based on Steve's information, you would need to modify the wheel arches or let it wear down until it clears.