Changing from 205 to 225 good???

[Fisheye]

Hi All,

 

Thinking of changing my stock 205/55/16 tyres to 225/50/16 for better roadhold. Was wondering if its a good idea. Had done the check using the tire calculator and this would result in only a +0.07% error reading on the speedo. Any1 had tried this before???

[Toalson]

Might wanna check if the wheel well has enuff space so as not to cause the tries to rub against anything.

[Ncss]

No problem for the radius as it was just 0.07%.

 

Need to check if the tire (Front) will rub (actually depends what car).

Make a full steering turn until lock, check if the tire rub against the inner wall.

Very minor rub is OK as we won't travel with full turn (only U-turn but minor is OK).

 

205 change 225... road holding will improved

but FC will slightly increase and power might slightly reduce (depend on your car deplacement, if high cc car... you might not feel the increase in FC & reduced power)

 

I would suggest that it is best that you follow the tire size as stated.

There is usually a sticker on various tire size... Jap car usually at the side of the driver's door and Conti car usually at the fuel cover... or you can read the car manual.

Edited June 27, 2006 by Ncss

[Fisheye]

Actually my ride can take up to 18" rims so corresponding tyre width sizes shouldnt be a problem. the only thing I'm concerned about is clearance. wouldnt this effectively be bringing down the ride height if i did not upgrade to larger rims??? need to take care on humps then....

[Zyrofillica]

hmm if rim no change and ur u change to smaller diameter tyres of 5mm difference. then ur ride will only drop by 5mm. And ur clearance for humps will only drop by 5mm. Not alot so shd be still ok

[Gary84]

bro...sure man no prob la...my stock one is 205/60/R16, nw im on 235/45/R17...yah there will be slight reading error on speedo though...however more stable on roads lor..but tk note ur FC will worsen k..

Edited June 30, 2006 by Gary84

[Inxs]

Lets take an honest Pro and Cons in upgrading

 

1.Pros - Looks nicer. Your ride will no longer look like a "van" with small tyres

2.Pros - You make ur own decision in choosing the rim and tyre, to your taste.. and not stock like anyone else.

3.Cons - $$$ involve in the trade off.

4.Cons - 10% higher in FC if going by 1" upgrade, so on and forth...

5.Cons - Bigger tyres, more expensive to change...

6...........................................

 

Im sure the bros here would like to add on further.. from their own perspective.. bottom line, from the a/m... its pretty simple, as long got $$, do whatever you like.. upgrade here, there, everywhere, even hang ur engine, buy a new one.. etc etc..

[Zyrofillica]

Erm, FC will increase with 1 inch increase in rims? How if the rims are lighter than the stock and the tyre size changes accordingly so tt the overall diameter of the the tyre+rimns remain the same?

[Teddi]

If you want better road holding, why not upgrade your stock shocks?

 

From 205 to 225, an increased load on 4 tyres would result in a longer braking distance.

 

 

Increasing tyre width is not always the best solution.

Edited July 2, 2006 by Teddi

[Inxs]

from 205 to 225, more surface contact, more friction/drag, its straight forward.

 

Putting on Light weight rims, obviously helps but by how much? We dont really know..

 

Take for example, my 16" stock rims alone weighs about 10kg. (225/50/R16)

I changed to a set of 18" VR rims, about 7kg w Michelin Pilot Sports 1 (245/40/R18)

My FC decreased from 7.5km/l to 7km/l...

[Fortress]

It will help in the handling, if that is what you are looking for. but the trade off will be fuel consumption, addition cost of tyres and rims, added wear on the bearing and shafts especially if your car is not designed for this size, possibly protruding tyre will incur fine.

Edited July 3, 2006 by Fortress

[Inxs]

Another way of putting it.. Agree. Bottom line, increase within the limits

[Fortress]

a good way of putting.

[Fisheye]

Hi All,

 

Thanks for all the advice given...went down to the shop to take a look at cost of changing tyres and possibly rims as well. The range of rims for 17" with PCD 112 is relatively limited so didnt go down that direction. Finally after deciding for almost 1hr, decided to go back to the original tyre size. The mechanic there commented that with 225 profile, the tyre may have too much excess sidewall bulging out from off the rim...abit like an overstuffed bak jang. Oh well...