It will affect the handling quite a bit. It will also slow it down due to the rotational mass added.
Also if you're fitting coilies and you go bigger and wider on your rims, you'll probably need arch work to get them to fit right.
point well made there fella appreciate the inputGood choice bud. 17's will always work best for the EP chassis as that's how it was designed and developed. For track some people go for 16's for the lighter weight setup, and usually quite wide for the extra grip. But for road and daily 17's will sit perfect.
If you are putting the car on track then there's an argument for 18's, as you can fit wider tyres easier than if using 17's. But that's an extreme example. For road use and the occasional trackday, 17's are perfect.
I have decided to just buy myself a real top set of tyres for the standard wheels instead of buying 18" s
I'll be going for goodyear eagle F1's got a trip to grinspeed to pay for first.What tyres did you go for?
Noooo. Get AD08R.
My current S has a lot of suspension mods; I've used both F1 Assymetric 2's and AD08R's, and the F1's are fit only for the bin. Pity as the F1 Assymetric 1's were much better and seemed nowhere near as soggy in the sidewalls. AD08R's are just as good in the rain if you stay focussed but transform the car overall.