T5 spark plugs ?
 

the car has what look like ordinary electrode plugs in it at the mo ! i'm sure in a turbo car like these it should be fitted with platinum tipped plugs !? i have a slight judder ( not a missfire) the its had a ETS done before so i'm thinking the MAF or throttle body may need a clean OR is it just the plugs that are to low a temp for a turbo car !?? its starts perfectly and no warning lights are on ! its a 2000 model with ME7 engine ! all thoughts are welcome
cheers peeps

Use the Volvo plugs, they are fine.

I'd agree - stick with the Volvo plugs on a std spec engine. The white block is very touchy about plugs and while others (my fav being NGK) may work OK, at least you'll know that you're getting the best performance from your plugs with OEM.