tyres needed 18

Hi, Looking for some advice regarding alloys and tyre sizes. Not going to lie completely clueless when it comes to this. The mrs owns a 2015 leon 1.2 tsi that has 16inch wheels on them and she is wanting some new alloys. She is looking to get 18inch alloys but unsure what size offset and...

any one got some good advice on tyres for LC with 18" rims as i got some **** ones at the mo that dont grip wet or dry price dont matter much but want some money left for crimbo want sumit to grip and last for good price