For me, 19" with 235 width tyres, should probably put bigger width to like 'balance' it out. But this decision is from the manufacturer itself and they had done the testing so yeah, up to individual preferences.
Review: 2016 FK2R Civic Type-R Turbo
- Thread starter Tom
- Start date
I understand they are going bigger but just saying they are more expensive too so my friend switch to smaller from original bigger rims. One is cheaper tyres and two is the size is easier to find....lol
Many years ago when the largest rims was 18" and this was actually what one tyre shop owner told his customer who wanted to order a 19" rims set. Can order but for tyres you better order 2 sets, because if any thing happens your car will be stranded because no body else have 19" at that time......hhahahhahha
That one executive car and manufacturer trying to compromise between safety and fuel savings too and of course cheaper OEM tyres.....lol
They could've gone for 18' with 225 or even 235 tires, more proportional, more comfortable, same safety or better and probably more fuel economic & better performance too with the lighter smaller rims. I tell you all this over sized rims are mostly just marketing to follow trend, just for show!
after some thinking and research I have found that manufacturers of today spec bigger wheels + lower profile tyres because:
- Increases contact patch which is kind of true if we compare a 235/45/17 vs a 235/35/19
- Increases sidewall stiffness to take advantage of intended suspension setup better
Which actually makes sense. If the wheel + tyre is more rigid, it enables engineers to set ride and handling better and allows the suspension to work more efficiently.
A simple article here that I found: http://articles.chicagotribune.com/2005-05-01/travel/0505010015_1_tires-rim-wheels
- Increases contact patch which is kind of true if we compare a 235/45/17 vs a 235/35/19
- Increases sidewall stiffness to take advantage of intended suspension setup better
Which actually makes sense. If the wheel + tyre is more rigid, it enables engineers to set ride and handling better and allows the suspension to work more efficiently.
A simple article here that I found: http://articles.chicagotribune.com/2005-05-01/travel/0505010015_1_tires-rim-wheels
But not all will like or follow. Guys probably yes, but when time to change tyres they will cry. I know a lady owner was already mentioning why the tyres so big......hhahhahahahha
Hmm how can the same 235 width will provide more contact patch if using lower profile? Is it because it becomes more square as the stiffer sidewall presses more of the outside tread?
Yes the increase in stiffness in theory should improve handling but I think you can also go too stiff and end up worse coz the tires are just too stiff to absorb road imperfections and hence skipping and loosing grip instead of absorbing and still gripping. We're still talking about road cars after all, if race cars then different. About 2 years back I watched a video of a Holden HSV if not mistaken where they compare lap times of that car using huge 19' or 20' vs when downgraded using just 1 inch smaller diameter (but same tires and width) and the lap times using smaller rims actually were faster! For me personally I would never go thinner than 10 cm sidewall, 10-11.5 cm sidewall seems ideal to still remain responsive handling yet comfortable enough for daily use to absorb road imperfections.
Yah then when comes time to change tire, settle for cheapo crap don't know from where tires! :stupid:But not all will like or follow. Guys probably yes, but when time to change tyres they will cry. I know a lady owner was already mentioning why the tyres so big......hhahhahahahha
Yes, that's the theory and less sidewall height = less deformation = suspension work better.
Yes, the old school of thought says taller sidewall = more comfort. So the tyres act as a form of suspension. That was during the ancient days of suspension engineering.
So if engineers are able to reduce or remove the tyre side wall deformation variable upon load, by introducing thinner sidewalls, squarer contact patch, they'd be able to determine loads better and optimize shock, spring types and more, therefore potentially offering greater comfort or handling.
As opposed to replacing factory wheels with bigger aftermarket wheels, where the suspension geometry have been set prior. Would likely guarantee a harsher ride and ruined handling. Which is what we are all used to.
I don't know, I'm still not convinced that such wafer thin tires like in this Civic is really the best. Probably the only way to really find out is to have cars like this tested using 1 inch smaller diameter rims but the same tires and width and see if they go slower or faster just like what they tested with that Holden, and be more comfortable at the same time.
Maybe 20" really helps in performance because back then when R35 is just introduced in 2007, almost all of its supercar competitors are still using 19" while R35 already went for 20". Which is probably why R35 had incredible cornering performance despite weighing at 1700kg which is heavier than F430, Gallardo, R8.
Well, I think the extra contact patch is from the circumference of the whole rim+tyre itself? Let's say a 235/35/19 VS 235/35/18. The 19" will have a larger overall circumference isn't it?
The R35 amazing cornering and maneuvering capability and traction are mostly due to its' sophisticated AWD system.
Contact patch is at one point in time is the same leh, not the whole circumference of the tire what!
The ATTESA system that started way back in R32 days.
Isn't it like if your overall wheel diameter/circumference (not sure if the word I am using is correct) is larger, the contact point with the ground will also be bigger?
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