My car uses a 235/45/R18 tire size. I understand this is what is termed low profile tire. I have bursted several of these tire sizes, due to potholes on some of the roads over here in Nigeria, as commute across the country.
Is it possible to get another different tire size, that would at least help some bit, without experiencing similar issues?
What tire size to use
-
Larz
- Moderator
- Posts: 3054
- Joined: Thu Feb 21, 2013 8:55 pm
- Car: 2019 Q70-L RWD
- Location: Ft Lauderdale, Florida
- Contact:
Re: What tire size to use
The factory set is 245/45/18 I believe. The middle number represents the sidewall as being 45% of the '245' size. Right now you have 45% of only 235.
You can use this website to mix n match tire sizes for your car. In the top row, enter: 245/45/18 and then use the right column to see what changes it makes for wheel fitment, speed accuracy, etc.
https://tire-calc.com/
You can use this website to mix n match tire sizes for your car. In the top row, enter: 245/45/18 and then use the right column to see what changes it makes for wheel fitment, speed accuracy, etc.
https://tire-calc.com/
Re: What tire size to use
Larz wrote: ↑Wed Nov 17, 2021 7:52 pmThe factory set is 245/45/18 I believe. The middle number represents the sidewall as being 45% of the '245' size. Right now you have 45% of only 235.
You can use this website to mix n match tire sizes for your car. In the top row, enter: 245/45/18 and then use the right column to see what changes it makes for wheel fitment, speed accuracy, etc.
https://tire-calc.com/
-
EniGmA1987
- Posts: 2257
- Joined: Tue Apr 28, 2009 5:13 am
- Car: '06 Infiniti M35 Sport
Re: What tire size to use
A larger second number means a taller sidewall and would be more of a "standard" tire. You could look for something around 225/60, that would give you an extra inch of sidewall. Or you could buy new rims that are 16" instead of 18", and go with something around a 75 sidewall instead
Re: What tire size to use
I prefer 225/60 than replacing a rimEniGmA1987 wrote: ↑Thu Nov 18, 2021 8:42 pmA larger second number means a taller sidewall and would be more of a "standard" tire. You could look for something around 225/60, that would give you an extra inch of sidewall. Or you could buy new rims that are 16" instead of 18", and go with something around a 75 sidewall instead
-
Forum429
- Posts: 11
- Joined: Sun Jun 07, 2020 12:54 am
- Car: Current:
Nissan R35 GT-R
Toyota Land Cruiser FZJ80
Honda Civic Si FG2
Lexus XE30 IS350
Previous:
G35 Coupe
G35 Sedan
G35x Sedan
Volvo S60R
Re: What tire size to use
225/60R18 is INCORRECT tire size for that vehicle.
It will have incorrect speedometer and odometer reading by 7.3%.
You can use 255/45R18 or 265/45R18 to give you an extra side wall but the new tire size needs to stay within 3% of difference.
It will have incorrect speedometer and odometer reading by 7.3%.
You can use 255/45R18 or 265/45R18 to give you an extra side wall but the new tire size needs to stay within 3% of difference.
-
EniGmA1987
- Posts: 2257
- Joined: Tue Apr 28, 2009 5:13 am
- Car: '06 Infiniti M35 Sport
Re: What tire size to use
Your suggestion would give his new tires only 10mm extra diameter, which meant 5mm more distance from the ground to the rim. DXTA is not going to get the results he is looking for with a sidewall close to what he has now, that was the entire point of this thread. He wants a taller tire for the roads in his country. You also cant arbitrarily post to get a tire much wider (over an inch!) than what he has on the car now, you have no idea if his rims will fit a wider tire like that. Sticking +/- 10mm from his current size will ensure the new tire can fit on whatever rims he is using on the vehicle. Also sticking to more common sizes where a lot of models are made gives a higher likelihood that he can find a tire like that in his country.
-
Forum429
- Posts: 11
- Joined: Sun Jun 07, 2020 12:54 am
- Car: Current:
Nissan R35 GT-R
Toyota Land Cruiser FZJ80
Honda Civic Si FG2
Lexus XE30 IS350
Previous:
G35 Coupe
G35 Sedan
G35x Sedan
Volvo S60R
Re: What tire size to use
Yes because vehicles only have certain amount of tolerance.EniGmA1987 wrote: ↑Tue Dec 14, 2021 8:36 amYour suggestion would give his new tires only 10mm extra diameter, which meant 5mm more distance from the ground to the rim. DXTA is not going to get the results he is looking for with a sidewall close to what he has now, that was the entire point of this thread. He wants a taller tire for the roads in his country. You also cant arbitrarily post to get a tire much wider (over an inch!) than what he has on the car now, you have no idea if his rims will fit a wider tire like that. Sticking +/- 10mm from his current size will ensure the new tire can fit on whatever rims he is using on the vehicle. Also sticking to more common sizes where a lot of models are made gives a higher likelihood that he can find a tire like that in his country.
You can't just add another 2 inches OD on a vehicle and expect it fits.
No professional would suggest to have more than 3% difference than original size otherwise you are throwing off the reading on the speedometer and odometer.
Also assuming he's running on stock rims 18X8.5 he CAN fit 255 and 265 at the rear.
While i am suggesting him to add 10mm on his tires you are suggesting him to decrease 20mm on the tires.
- Attachments
-
-
-
Find Your Forum!