Hi peeps

i'll answer a few questions about these plugs NGK R(acing)-7235-9

i have been using these for nearly 8 yrs ....i cannot fault them in anyway ......i have used champion c57c, c59c, + Ford plugs ,in the past no offence they all work well but very short lived thats the only problem with them.


1,..The NGK R-7235-9 will out live these plugs by nearly 6 times longer

2,...On cold morning the start up well you wouldn't think the engine was cold at all

3, they don't missfire at any rpm ,if they do you either have dodgy ignition system

4.. I have seen 7 trackdays +15,000 road miles without any missfires and they are still in my car now working fine

5, all i can say they are the best plug on the market that why you pay top money for them .........IMHO.i wouldn't use anyother plug unless i couldn't get hold of these

Cheers marco