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This post has been edited by boonykun: Oct 28 2016, 03:29 PM

should have use champiro hpy for 17", much better than 912..Want comfort, go change back to ori size

Hahaha, of course uncomfortable, 215/45 sidewall thickness or height is only 9.7cm. You should've just stayed on 16'. If want to improve a bit more comfort on your 17', you should use 205/50/R17, the sidewall is 10.25 cm, providing additional 0.5cm cushion compared to 215/45. But don't expect it to match your stock comfort. 215/50/R17 is nice but rather too big compared to your stock diameter.

sorry if hijack this thread a bit.. I'm currently driving forte 2.0 with 215/45/R17.. from browsing around the net, the recommendation is staying with 3% of the diameter of the ori tyre and changing to 215/50 is a bit out at 3.44%.

http://www.1010tires.com/Tools/Tire-Size-C...45R17/215-50R17

is still recommended to use 215/50 for R17?

Like I said above, it's a bit too big, so not really recommended. Better use 205/50/17.

of course comfort will be less, your rims are now bigger meaning your tire sidewall is less, providing your tires are about the same

yes 205 50 17 a bit better

you want comfort change back to 205 55 16

thanks for all the feedback.. i just change to a new set of rim few month..
guess I'll stuck with 17" for sometimes... guess I'll try give 205 55 16 on my next change..


This post has been edited by shadow111: Jun 3 2013, 08:21 AM

you'll get used to it, dont worry heheh

Either you get used to it, or you get tired of it. I was the later one.

Tried 215/60/R16, vs 205/55/R16, and 225/45/R17...

Gonna get 215/60/R16 for my dad end of the month, swap his rims with mine ~_~

and Once 215/45/R17 burns off. then replace his tyres with 215/55/R17. Since His car got more spacings

LOL.. I'm same with you..
drove both persona n preve.. found both has better comfort compare my current drive with 215/45/R17..

how's 225/45/r17 compare to 215/45/r17?

Again, a bit more comfy since the sidewall is almost 0.5cm thicker, almost the same height as the 205/50.

Not much difference actually ~_~

hi ts,

any effect on handling and fc after u change to 17"?

hmmmm... thought 225/45 shld hv better comfort compare to 215/45..

Yes, only a little bit.

225/45 and 205/50 got almost similar diameter with the stock tyre 205/55/r16... but 215/45/r17 actually smaller...

Yeap, almost 1cm smaller diameter.

hmmmm... i thought 1cm is alrdy a lot?

what tires do you guys recommend for size 205/50/17?
does champiro HPY comes in this size?

just sharing my exp, using 215/50/17 now ..prev 205/60/16...
been using for weeks now...noticed higher FC a bit...heavier...but cornering better... sampan feel when reaching 100kmh on an uneven road.. mayb i need to lower my car...n using some strut bar mayb to improve handling...

What car? If FC is a bit higher that means you're not using lightweight rims.
Lowering your car with sport springs will much improve stability. Strut bar though not so much unless you go racing or jumping up and down in rally tracks. Better spend the money for better dampers and anti-roll bars, they will give much more significant improvement. I'd think 215/50/17 should still be ok though, I'm also using the same size for my front.

me inspira bro... oic wht do u mean by anti-roll-bar... isnt strut bar? hehe noob

Anti-roll bar or sway bar is a bar that tie up your left & right suspension underneath to make them move in a more synchronized/even manner. It basically reduces the car body roll/lean angle during cornering, hence makes it more flat, and makes your handling sharper and gives better grip in the corners. This you can feel more improvement for street use. It has some flexibility depending on the design and thickness. The thicker the bar, the less body roll you will have, but it may also make the car more nervous and stiff when going thru uneven surfaces.

Strut bar on the other hand is just to tie up the left & right top mounting points of the shock/strut. So the purpose is just to increase chassis rigidity/reduce chassis flexing. This chassis flexing becomes significant during very hard maneuvering like hitting the apex curb during track racing, or when going fast and jumping on uneven surfaces like in rallying. For street use cars, IMHO this is not much needed because you won't be doing such extreme maneuvering which will cause significant chassis flexing, hence even when you install it, you won't feel much difference/improvement.

oic... last nite i just tried to drive up to 1xxkmph, when reaching 100+kmph notice some vibrate n 'not-syok' feeling.... is dat coz of tyres (cheapo-tyres) or balancing stuff? btw stock 16" CC5 much more better

This post has been edited by kento: Jul 28 2013, 08:28 AM

Can be the tires & rims not well balanced, can be your engine and chassis already cannot cope and creating excessive vibrations. Tires even though cheap but if balanced well and no bulging then should not vibrate. Balancing problems normally happens only at certain speed range and does not happen below or over that speed range. If the vibration just keep increasing as the speed climbing and never goes away afterwards, then most likely not balancing problem.

oic... on wheel balancing is ok for CVT auto?

Sure, why not?? On wheel balancing is with engine off and transmission in neutral anyway.

got results frm Google, said not good for CVT/auto gb... i oso dunno...

more thicker, more comfort, less handsome haha