Jump to content

Upsizing rolling diameter

Zyrofillica

By Zyrofillica,
in Tyres and Rims

 Share

Recommended Posts

Good-Carbuyer

Good-Carbuyer

1st Gear

Hi guys,

 

Thinking of upsizing from 205/55/16 to either 225/50/17 or 225/45/18

 

difference will be new tyre is 5% larger than original in terms of diameter. Has anyone upsized their tyres this way and how did it affect your car?

 

My body kit is too low and my wheel gap is too large so instead of lowering it i am thinking make the wheel bigger to cover the gap and at the same time preserve the ride height so i may still enter MSCP.

 

My wheel gap is 3 inch. my front kit to ground is 3 inch which is already scrapping every mscp in singapore. :wacko:

I got neighbour with car undercarriage saying 'g-r-e-a-t' each time he drove over the speed hump at open carpark, as well. However, 3% seems to be the recommended threshold for any tire upsizing.

↡ Advertisement
Link to post
Share on other sites
D3badge

D3badge

6th Gear
(edited)

what car are you driving.?Our speedometer by the way is about 5-7% faster,actually upsizing your tires will make it more accurate.

 

base on what "speedometer is faster abt 5%-7%"? what car u driving?? my car speedo very accurate, reason, speedo same as GPS thus cannot be 5% to 7% apart the most 1% apart

Edited by D3badge
Link to post
Share on other sites
Cluboxed

Cluboxed

1st Gear

base on what "speedometer is faster abt 5%-7%"? what car u driving?? my car speedo very accurate, reason, speedo same as GPS thus cannot be 5% to 7% apart the most 1% apart

 

really? what car are you driving?

Link to post
Share on other sites
Zyrofillica

Zyrofillica

1st Gear
  • Author

Inaccurate odo is small issue.. its the rubbing with fender when making completed turn that's irritating. . Make sure yr wheel arc can accommodate. I upsize 3%.. more for comfort factor as thicker.. having the tyre svrabbing against fender when turning completely when doing u turn especially

 

 

well... there is no way my fender is even going to smell my tyre. as you can see, they are like worlds apart from each other [laugh]

 

now someone look me in the eyes and tell me my tyres are nicely sized for that wheel arch so that i can sleep well tonight. [bigcry]

 

IMG_0684.jpg

Link to post
Share on other sites
Zyrofillica

Zyrofillica

1st Gear
  • Author

u can fit 4 stray cats inside

 

and 4 more stray dogs :o why the hell my car is designed with such a big wheel well. It looks like i need some huge ass rims and tyres! i think only a suvs gap is more!

Link to post
Share on other sites
Elfenstar

Elfenstar

3rd Gear
(edited)

well... there is no way my fender is even going to smell my tyre. as you can see, they are like worlds apart from each other [laugh]

 

now someone look me in the eyes and tell me my tyres are nicely sized for that wheel arch so that i can sleep well tonight. [bigcry]

 

Looking at the pic, other than the speedo being off, the only other possible issue is with the tyre rubbing the sidewall when you're turning. I doubt your car will bottom out and hit the tyres with a full load over bigger bumps [laugh]

 

Is the lip at the bottom of the front bumper stock??? It seems to be really low (compared to the side-skirts) which may be your issue.

Edited by Elfenstar
Link to post
Share on other sites
Lectrosphere

Lectrosphere

1st Gear

well... there is no way my fender is even going to smell my tyre. as you can see, they are like worlds apart from each other [laugh]

 

now someone look me in the eyes and tell me my tyres are nicely sized for that wheel arch so that i can sleep well tonight. [bigcry]

 

nice ride bro! :wub:

 

your front only so many light bulb liao :wacko:

Link to post
Share on other sites
Zyrofillica

Zyrofillica

1st Gear
  • Author

Looking at the pic, other than the speedo being off, the only other possible issue is with the tyre rubbing the sidewall when you're turning. I doubt your car will bottom out and hit the tyres with a full load over bigger bumps [laugh]

 

Is the lip at the bottom of the front bumper stock??? It seems to be really low (compared to the side-skirts) which may be your issue.

 

no not stock. its about 2 inches lower than stock.

 

thinking upsize 5% and lower 2 inches but then im not sure if i can survive most carparks. anyone here with ultra low cars? How do you park/survive? [gossip]

Link to post
Share on other sites
The_young_once

The_young_once

Neutral Newbie

no not stock. its about 2 inches lower than stock.

 

thinking upsize 5% and lower 2 inches but then im not sure if i can survive most carparks. anyone here with ultra low cars? How do you park/survive? [gossip]

 

 

I think everyone already mentioned all the possible concerns about your upsizing plan, I feel the most pertinent is rubbing inner wheel well when full-lock turning, other than that speedometer a bit out is ok? Just don't speed, stay 5km/h below the limit (as indicated by meter) [:)]

 

I was once low, 1 finger front, zero to negative finger rear, with no one in car! Unusable, I changed that setup after few months, how to park? strictly no overhang allowed over any kerb (initially bang the bumper a lot) so the car quite 'sticks out' esp in normal HDB lots, and no need to say, at least half of the humps I go over is scrappage time, even if very slowly, with 1 person in car only (driver)!! Going up MSCP slope, every slope is scrappage also

 

As I said, unusable, changed very quickly, but I never put any skirting/lip/bodykit, I know to each his own, but I loves the LOW, but strictly w/o kit, bare body shape best, btw, 2006 Altis

 

 

Kenny

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing
×
×
  • Create New...