new tires

[cu51pra]

can people tell me the difference between running 205/45 17 and 205/40 17 coz i wana get some Yokohama Parada Spec 2 and there bout £85 for the 205/40 17 tires any help would be great

 

[flashbsd]

your speedo may be slightly out but nothing else will affect you.

I am buying 40 profile next on the 16's

 

[cordobabrendy]

comfort also, the 45's will have a little more bounce and less thrashiness over uneven surfaces.

 

[mark65]

Taller profile tyre and thats about all. Maybe a bit more sidewall flex but you might havse clearence probs at the back

 

[cu51pra]

why would i have clearence probs at the back im running 45s at the mo so 40s will be smaller

 

[flashbsd]

EDIT: as you will have 17's with 40 profile, you may find they work out the same as 16's with 45's, so there may be no difference, 1 or 2 mph max

 

[cu51pra]

could i put 40s on the front and 45s on the rear so the wait is slitly transfered to the front wheels for 1/4miles?

 

[cordobabrendy]

could i put 40s on the front and 45s on the rear so the wait is slitly transfered to the front wheels for 1/4miles?

nope, wont make any difference. for 1.4 milers to make any sort of noticeable improvement, you need around 25 brake extra, a slightly lesser profile makes $£$k all difference, illegal too if the car wasnt specced with those tyre differences too (rwd being the exception iirc)

 

[cu51pra]

got it so 40s all round then it is using Yokohama Parada Spec 2 tires

 

[cordobabrendy]

do what you want (you will anyway) but 40's are like rubber bands, 45s are tyres.

 

[cu51pra]

wot will grip better 40s or 45s?

 

[cordobabrendy]

i doubt youll see much of a difference, in the wet the 40's might be more unpredictable tho as they will act more like a sled.

 

[flashbsd]

i had 40's on the last car, and i found especially as they were extra load models, they didnt have any movement in the tyre wall! and i did dodge every hole in the road (still do with 45's) .

only thing i would say, you may loose any RIM protection edge on them as they get stretched further having a more rounded sidewall.