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Where are you based?

I'm reasonably sure Tempe Tyres in Sydney used to advertise RT215s in 18" for less than $500 a corner. The site's been overhauled, so they no longer have the prices.

However, if you're expecting RT215s to perform like a proper Comp-R semi slick, you're going to be disappointed. They're a very grippy street tyre, but even Falken's marketing drones advertise it in the radial section, rather than motorsport class.

i use the RT215s 245/17s, not bad but they are no RE55. if you want semi slicks go the whole hog and get some RE55s or something like that. the RT215s are ok, but the rubber is no where near as soft/grippy as the main semi's out there.

What are they being used for?

One thing people tend to forget is that when semi's are cold they are damn un-grippy. And getting good heat into them on the streets isnt easy.

If its a kick ass street tyre your after then the Aziens are probably the go. I think the new Aziens - the 615's are due out in October. But if its for the track then the RE55's are the go.

What Snoman said.

I assumed from you asking for "semi comps" that you were after a motorsport tyre, for which the RT215s are not suitable.

However, if you're just after something for "daily driving" street use, the RT215s will do a better job. They've got better wet weather grip and don't require as much heat.

Its not impossible to get Comp R semi slicks up to temperature on the street, but generally it'll only be if you go on a fast-paced cruise or whatever. However, every time it rains you're in for an adventure. And the noise will drive you insane.

what im trying to acheive is an all round tyre that will give the best of three worlds?? road , track and strip. is this an impossible dream. i suppose id probably be on the the road 90% of the time though. what do i do spend spend spend on two different sets of tyres or do i buy a good road semi like the rt215s??? would love to hear what you guys think? would 245/40 semis be anygood on the drag strip and the road??

mate if you are on the road 90% of the time i would suggest buying a good road tyre. or if you can afford it buy a 'reasonable' road tyre and a set of semi slicks. I drive on RT215s on the road but i don't do many kms at all so wear is not really that much of a factor. I really think you are better off with two sets if you can afford them, 1 for road, 1 for track/strip.

depends what you are doing.. if you are against true track warriors, they'll have full type R compound and you'll wish you had something a little better...esp in a powerful RWD (like it looks like yours is)

But compared to the occasionals, who who run cheap ass road tyres on the track, then they'll be wondering why you are doing a bit better than they are :) So its all a compromise and what you want to achieve.

You are doing yourself a disfavour running 18's, as even if you go cheap roadies, and cheap track tyres, its still going to cost $$$

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