I currently have 11 inch tread tires on an 8 inch rim, and was thinking of stepping up to a 12 inch tread tire. i know they recommend 10 inch rim minimum for a tire that wide, but i dont have the $ to spend on new wheels, so my question is, is it that big of a deal to run a 12 inch tire on an 8 inch rim. The car runs mid 11s. Thanks
JeffLebowski
If you need the tire to run at it's optimum performance, using a rim width that is the same or wider than the tread is recommended. I do not think you will get full advantage of the wider tire keeping it on an 8 inch wheel. I'll also say in my opinion, running mid 11's the 11 inch tread should be sufficient.
Thanks,
Jason Moulton
Thanks,
Jason Moulton
would you please ellaborate on the relationship between tire width v rim width more. someone told me once that if you run say a 10" tire you altitmately would want a 10" rim. he said if you go narrower it affected the launch somehow and if went wider it would improve or help the launch.
on another thread where someone asked about section width i seen where you made note that the section width increased/decreased based on rim width.
would you mind or someone mind ellaborating on this more.
fig i would add onto a post instead of starting another one.
ty
dean
on another thread where someone asked about section width i seen where you made note that the section width increased/decreased based on rim width.
would you mind or someone mind ellaborating on this more.
fig i would add onto a post instead of starting another one.
ty
dean
Well, I could probably write a book on this topic alone. We are learning more and more about the tire to wheel relationship every day. (This is true even in Top Fuel) It wasn't that long ago we did not suggest going wider than 1" on rim width past the tread.
We make recommendations based on the performance of the vehicle and trying to optimize the performance of the tire. I'm always one for suggesting the smallest tire that will get the job done, therefore, the tire and wheel combination should be put together to get the most out of it. Running the proper wheel width does several things.
- Optimizes the footprint of the tire at the proper inflation for better traction.
- Enables the sidewalls of the tire to perform as designed.
- Reduces the chances of tire shake by helping the tire "stay round" and improving control of the tire itself.
- Improves tread wear - the tires will last longer.
- Enables the tire to carry more "load" at a given air pressure.
Yes, changing rim width will effect the section width of the tire approx. .400" for every 1" change in rim width.
I hope this helps some. Again there are many theories and designs behind this, so I did my best to provide a high level overview.
Thanks,
Jason Moulton
We make recommendations based on the performance of the vehicle and trying to optimize the performance of the tire. I'm always one for suggesting the smallest tire that will get the job done, therefore, the tire and wheel combination should be put together to get the most out of it. Running the proper wheel width does several things.
- Optimizes the footprint of the tire at the proper inflation for better traction.
- Enables the sidewalls of the tire to perform as designed.
- Reduces the chances of tire shake by helping the tire "stay round" and improving control of the tire itself.
- Improves tread wear - the tires will last longer.
- Enables the tire to carry more "load" at a given air pressure.
Yes, changing rim width will effect the section width of the tire approx. .400" for every 1" change in rim width.
I hope this helps some. Again there are many theories and designs behind this, so I did my best to provide a high level overview.
Thanks,
Jason Moulton
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