Tire QUESTION?? w new wheels.......Help!

[Jstang23]

I have a non pp stock suspension, so not lowered. Ok, i think i understand what your saying.. I always thought the middle number is tire height...........

It is, but it has to do with the width of the wheel and how much you stretch or squeeze the tire. For example stretch tires may be a 245/35/17 but when you stretch them on 17x9.5 wheel the height displayed means nothing. Not the same application here but you get the idea!

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[Velgen]

Hey--
I found the wheel OFFSET +35 mm.
Thanks Anthony

You shouldn't have a problem at all. What tire brand are you running ? the right tire should be protecting the wheel like the images below. this is a 19x10 with a 285-35-19 and lowered

 

[monte87]

It is, but it has to do with the width of the wheel and how much you stretch or squeeze the tire. For example stretch tires may be a 245/35/17 but when you stretch them on 17x9.5 wheel the height displayed means nothing. Not the same application here but you get the idea!

Ohhhhhhh ok! I got it!!!!! I understand what your saying. Thanks for explanation. =)
Anthony

 

[mustanghammer]

Thanks for your reply!!!!
So let me ask you then, If i get a 285-35-R19 and slap on SVE-PP2 wheel, should i bet good to go with enough meat on side wall to be able to go into car wash safely without destroying my new wheels?
Thanks Anthony

I'll answer your question in two ways

First
Likely. I have this exact size tire on 19x11 wheels and when I stack them the side walls of the tires are touching and not the rims. So on a 19x10, the side wall of the tire will bulge more than they do on 19x11s. The tires in my example are Bridgestone RE-71RS. I autox on them.

Referencing the tires I am using, according to the Tire Rack when mounted on a 10" wheel the Bridgestone RE-71RS has a section width of 11.4" That would provide a bulge of 2/10" beyond the edge of the wheel.

Is that enough? Don't know, maybe.

The second part of the answer gives you a way to know without asking every member of the forum for real world fitment examples. You can short cut the research a little by calling or chatting with a Tire Rack rep. I'm not a Tire Rack shill but they do an excellent job of providing useful data and support grassroots motorsports better than anyone. You might also reach out to LMR - they sell your wheel with specific size tires packages.

Second
Tires are constructed differently. Some have a thicker sidewall and or incorporate a "rim protector" into the side wall. This is why you need to look at section width. Especially if you can find a section width spec where the tire was mounted on the same width rim that you are trying to use. A Tire Rack rep could likely point you to tire models that have thicker sidewalls or rim protector features.

Wheel width is more of a constant. However when you are determining how rim width affects sidewall bulge you have to calculate this using the OUTER dimension of the wheel. What does that mean?

Advertised wheel width measurements are bead to bead. This is an accurate measurement relative to tire fitment. However this does not define the actual width of the wheel. From experience, you need to add 1" to the advertised width. So a 19x10 is actually 11" wide. Don't believe me, measure your rims, This is pretty consistent across all wheels. This is coming from someone that managed to put an 15x8" wheel on a massively lowered car designed for a 13x5.5" wheel while maintaining stock fenders (albeit with some mild messaging).

So with a rim that is actually 11" wide you need a tire with a Section Width that is GREATER than 11" when it is mounted.

 

[monte87]

You shouldn't have a problem at all. What tire brand are you running ? the right tire should be protecting the wheel like the images below. this is a 19x10 with a 285-35-19 and lowered

You shouldn't have a problem at all. What tire brand are you running ? the right tire should be protecting the wheel like the images below. this is a 19x10 with a 285-35-19 and lowered

Thanks for your help, greatly appreciate it!!! I didnt buy new tires yet, but def will be soon.. Is there any that you would recommend? 285/35/19's. I'm looking for an all season, def not pirelli since i have them already and they suck.
Thanks Anthony

 

[monte87]

I'll answer your question in two ways

First
Likely. I have this exact size tire on 19x11 wheels and when I stack them the side walls of the tires are touching and not the rims. So on a 19x10, the side wall of the tire will bulge more than they do on 19x11s. The tires in my example are Bridgestone RE-71RS. I autox on them.

Referencing the tires I am using, according to the Tire Rack when mounted on a 10" wheel the Bridgestone RE-71RS has a section width of 11.4" That would provide a bulge of 2/10" beyond the edge of the wheel.

Is that enough? Don't know, maybe.

The second part of the answer gives you a way to know without asking every member of the forum for real world fitment examples. You can short cut the research a little by calling or chatting with a Tire Rack rep. I'm not a Tire Rack shill but they do an excellent job of providing useful data and support grassroots motorsports better than anyone. You might also reach out to LMR - they sell your wheel with specific size tires packages.

Second
Tires are constructed differently. Some have a thicker sidewall and or incorporate a "rim protector" into the side wall. This is why you need to look at section width. Especially if you can find a section width spec where the tire was mounted on the same width rim that you are trying to use. A Tire Rack rep could likely point you to tire models that have thicker sidewalls or rim protector features.

Wheel width is more of a constant. However when you are determining how rim width affects sidewall bulge you have to calculate this using the OUTER dimension of the wheel. What does that mean?

Advertised wheel width measurements are bead to bead. This is an accurate measurement relative to tire fitment. However this does not define the actual width of the wheel. From experience, you need to add 1" to the advertised width. So a 19x10 is actually 11" wide. Don't believe me, measure your rims, This is pretty consistent across all wheels. This is coming from someone that managed to put an 15x8" wheel on a massively lowered car designed for a 13x5.5" wheel while maintaining stock fenders (albeit with some mild messaging).

So with a rim that is actually 11" wide you need a tire with a Section Width that is GREATER than 11" when it is mounted.

Thank you for the elaborate explanation, you have def answerd my question and i will take your advice and call tirerack and LMR... I cannot thank you enouught!!!!!!!!!!

Anthony

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