What tire size to use

Forum for Infiniti M35 and M45, and Nissan Fuga owners.
Dxta
Posts: 97
Joined: Sat Feb 22, 2020 5:52 pm
Car: Infiniti M45 sedan base sport

What tire size to use

Postby Dxta » Wed Nov 17, 2021 1:33 pm

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?


Larz
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Car: 2009 M35 RWD
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Re: What tire size to use

Postby Larz » Wed Nov 17, 2021 7:52 pm

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/

Dxta
Posts: 97
Joined: Sat Feb 22, 2020 5:52 pm
Car: Infiniti M45 sedan base sport

Re: What tire size to use

Postby Dxta » Thu Nov 18, 2021 4:53 am

Larz wrote:
Wed Nov 17, 2021 7:52 pm
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/

EniGmA1987
Posts: 2133
Joined: Tue Apr 28, 2009 5:13 am
Car: '06 M35 Sport

Re: What tire size to use

Postby EniGmA1987 » Thu Nov 18, 2021 8:42 pm

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

Dxta
Posts: 97
Joined: Sat Feb 22, 2020 5:52 pm
Car: Infiniti M45 sedan base sport

Re: What tire size to use

Postby Dxta » Fri Nov 19, 2021 3:18 pm

EniGmA1987 wrote:
Thu Nov 18, 2021 8:42 pm
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
I prefer 225/60 than replacing a rim


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