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OK to go from 20" to 18" ?

 
Old 07-10-2019, 01:17 PM
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Originally Posted by ConservativeConsumer View Post
Dude, there is no theory to debunk! The truth is that spec has numbers posted and that is it. We can choose to install whatever you or I want against posted limits and find a tire place willing to oblige no matter what. Then we can make our own beliefs about "more than safe" operation and be possibly quite safe for an entire life of the selected tires...But Continental DWS 6 are also made in size 275/45R20.
Totally dude. You can believe what you want but I and countless other owners actually have experience with the 295 on an 8” tire and never had an issue. General, Hankook, and Yokohama. No tire stretch and no unusual issues. Go ahead and buy the smaller size for all I care.

” Pushing safety limits” is quite the exaggeration though. You obviously have limited experience with wheel and tire sizes.
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Old 07-11-2019, 05:14 PM
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Thanks for the feedback guys.

I know manufacturers ask for a minimum of 9.5 rim with and i also know about several people installing the 295-45-20 on the OE 20" rims with zero issues. When it comes to alternatives to the OE RF 285-45-20, i would go with the 295 rather than the 275-40-20 which will give you a 3.4 MPH difference at 70MPH and is significantly smaller in diameter (~1.5") than the OE 285. But, this is also a matter of personal liking at some point i think .

I also wanted to hear your feedback about the combination of the spare wheel and tire that i plan to get. I am being cheap on that but chances are that i will never use it. I will go with 18" but at the end the diameter is very close to OE though the width is significantly smaller.
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Old 07-12-2019, 09:20 AM
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Originally Posted by djedward View Post
Thanks for the feedback guys.

I know manufacturers ask for a minimum of 9.5 rim with and i also know about several people installing the 295-45-20 on the OE 20" rims with zero issues. When it comes to alternatives to the OE RF 285-45-20, i would go with the 295 rather than the 275-40-20 which will give you a 3.4 MPH difference at 70MPH and is significantly smaller in diameter (~1.5") than the OE 285. But, this is also a matter of personal liking at some point i think .

I also wanted to hear your feedback about the combination of the spare wheel and tire that i plan to get. I am being cheap on that but chances are that i will never use it. I will go with 18" but at the end the diameter is very close to OE though the width is significantly smaller.
I think mhoran meant 275/45, not 40, which is a 1% difference from 285/45.
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Old Yesterday, 05:04 AM
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Originally Posted by NABS4 View Post
I think mhoran meant 275/45, not 40, which is a 1% difference from 285/45.
correct I meant 275/45/20, sorry for the fat finger.
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