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RB 182 Cup
Hi Fred, do you think 205/50/15 is a better size on a 15x7 than the usual 195/50/15?
Cheers
Cheers
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It's wider LOL
Fairly simple - more surface area touching the ground = more grip
And yeah 205/50/15's fit fine - had them on my 2118's for a few years
M6 - be interested if they fit ok as that's very cheap
My concern is the rsr's seem very wide - my mate has 195/50/15's on his 106 and they stick out quite a bit from the tyre
Fairly simple - more surface area touching the ground = more grip
And yeah 205/50/15's fit fine - had them on my 2118's for a few years
M6 - be interested if they fit ok as that's very cheap
My concern is the rsr's seem very wide - my mate has 195/50/15's on his 106 and they stick out quite a bit from the tyre
true to a point, but more surface area equals less pressure per square inch on the tyre to try and work the compound properly. So there is an optimum width that's different for any given compound even on the same car, then add in weight etc and it gets even more complicated.
On a soft compound trackday type tyre I reckon the optimum for my car is 205 but not much in it compared to 195 and I reckon going any wider again would get worse unless it was a very soft compound, especially on the back where its hard to get heat in.
Simplified version - its better
On my clio I agree, on other cars though it wont be, its not a matter of one size fits all, so was just trying to help out a bit with some extra info for anyone who hasnt really thought before about the fact that just cause a bit wider is a bit better in one case that its not as simple as wider is always better, a 265 on a clio for example would be disgusting.
182cup & 172 racecar
205's got me an extra second around Oulton compared 195's.
I think it's safe to say on 99% of clios a 205 offers more grip
Depends on the compound of the tyre, harder compounds wont get enough heat into them very quickly even at 195 and at 205 they will be even slower to heat up.
For most trackday tyres though, I agree totally, certainly the case on mine.
I can't see anyone really wanting to run hard compound tyres on any cars on this forum. Unless I've missed something
Some people on this forum do trackdays on normal road tyres if they are just doing one here and there, these tend to be quite a hard compound, they might not offer the same benefits on a wider tyre as the trackday rubber does.
Yeah I'm still running uniroyal rainsports LMFAO
They get too hot if anything even on 205 width
They get too hot if anything even on 205 width
they feel really good and sit nicely on the rim. I've got a couple of photos to upload later.Oh sweet - good to know they fit. For £260 a set I'm really tempted to get some bought myself 
Yeah on a rainsport on a dry day I think you need about an 805 width to not overheat on a clio, lol
LOL yes very valid
