6gr dilemma

[Jmk]

I have 6gr 7spoke wheels on my Gt350. 19x11 & 19x11.5” rear. I was never happy with the rear stance. The rear wheels stick out too much in my opinion. Recently I purchased 19x11 50mm offset for the rear thinking the half inch difference would tuck the wheel flush even with the rear fender. While the tire is stretched less I don’t think there is any difference between 11 and 11.5” where the end of the wheel face ends up.

This is the 11” wide with Michelin super sport 305s

this is the 11.5” wheel with the same tire

side by side tire stretch difference between two wheels


Do you guys have any solutions? How are the sve r350 wheel fit? Could any one share pictures of rear. Thanks

Jerry

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[Schwerin]

Why not go with a 10.5 or 10in? You dont need an 11 to run a 305. I ran 335's on my 10.5in on my Mach1. It looks like the top of the tire is flush so it's the stretch that is making it poke.

 

[Jmk]

When I called N4sm about replacing the 11.5” they recommended 11s with 50mm offset. I’m assuming that was to clear the rear brakes.

 

[Eric5899]

I have 6gr 7spoke wheels on my Gt350. 19x11 & 19x11.5” rear. I was never happy with the rear stance. The rear wheels stick out too much in my opinion. Recently I purchased 19x11 50mm offset for the rear thinking the half inch difference would tuck the wheel flush even with the rear fender. While the tire is stretched less I don’t think there is any difference between 11 and 11.5” where the end of the wheel face ends up.

This is the 11” wide with Michelin super sport 305s

this is the 11.5” wheel with the same tire

side by side tire stretch difference between two wheels


Do you guys have any solutions? How are the sve r350 wheel fit? Could any one share pictures of rear. Thanks

Jerry

I'm having a similar dilemma. I have a '19 GT with the black accent wheels (19x8.5) and want to go to the largest wheel/tire in back that won't poke out. I can't find any reference chart for wheel/tire/offset. I did find this but it says the minimum wheel width for 305 is 11". https://www.tyresizecalculator.com/tyre-wheel-calculators/tyre-size-for-rim-size-width-calculator

 

[Jmk]

Does anyone have sve r350 wheels on their gt350?

 

[lightrules]

Does anyone have sve r350 wheels on their gt350?

see this thread: https://www.mustang6g.com/forums/threads/sve-r350-wheels-for-gt350r.99123/

i have the R350 wheels in gloss black on my R.

 

[Jmk]

Thanks lightrules. I don’t however see picture of the back wheel fitment. Would you mind taking a snap of yours and sharing

 

[alan0614]

 

[alan0614]

Fitment with the R350 is spot on in my opinion.

 

[JAJ]

When I called N4sm about replacing the 11.5” they recommended 11s with 50mm offset. I’m assuming that was to clear the rear brakes.

Well, that didn't help at all! Your tires, when they're mounted on 11" ET50 rims, actually poke out a bit further than if they were mounted on the 11.5" ET55's (the ones that poked out too far).

Here's how it works: reducing the rim width by 0.5" from 11.5 to 11.0 only moves the tire beads closer together. The tread width doesn't change. If you measure across the sidewall bulge, a tire on a 0.5" narrower rim is only 0.2" narrower. That's 0.100" on the outside and the same on the inside. However, reducing the offset by 5mm from 55mm to 50mm shifts the whole tire outward 5mm, which is 0.200". In other words, the change from 11.5 ET55 to 11.0 ET50 actually pushed the outer sidewall OUT by about 0.100".

The factory 11" rear rim is ET62. It sits 1/2" further in (and it clears the brakes and struts, etc). However, most of the aftermarket wheel makers have elected to make 11" "rear" rims in ET50, just like 6GR. If you really want to solve the poke, you might need a custom rim that's the same as factory or you'll have to switch to factory rims.

Update: the "GT350/GT350R Specific" 11" SVE R350 rear rims are ET60. That's why alan0614's pictures look so good.

 

[Jmk]

That’s exactly what I was looking for thanks for that

 

[alan0614]

That’s exactly what I was looking for thanks for that

Glad to help.

 

[Jmk]

Well, that didn't help at all! Your tires, when they're mounted on 11" ET50 rims, actually poke out a bit further than if they were mounted on the 11.5" ET55's (the ones that poked out too far).

Here's how it works: reducing the rim width by 0.5" from 11.5 to 11.0 only moves the tire beads closer together. The tread width doesn't change. If you measure across the sidewall bulge, a tire on a 0.5" narrower rim is only 0.2" narrower. That's 0.100" on the outside and the same on the inside. However, reducing the offset by 5mm from 55mm to 50mm shifts the whole tire outward 5mm, which is 0.200". In other words, the change from 11.5 ET55 to 11.0 ET50 actually pushed the outer sidewall OUT by about 0.100".

The factory 11" rear rim is ET62. It sits 1/2" further in (and it clears the brakes and struts, etc). However, most of the aftermarket wheel makers have elected to make 11" "rear" rims in ET50, just like 6GR. If you really want to solve the poke, you might need a custom rim that's the same as factory or you'll have to switch to factory rims.

Update: the "GT350/GT350R Specific" 11" SVE R350 rear rims are ET60. That's why alan0614's pictures look so good.

That makes more sense. I wish the guy from N4sm would have explained that to me. I told him I was looking for flush fit. I was under the assumption that the half inch less would be closer to the fender.

 

[Jmk]

Well 6gr s will be for sale soon. I don’t think N4sm will take them back if they didn’t see the road

 

[nastang87xx]

That's 350R measurements, yes they do poke which is normal. Because of the rear brakes several wheel designs have a hard time clearing the caliper face so getting as close to factory offset is difficult. My Forgestar CF5V's are a 61+ offset and they clear the rear brakes by about 2mm which is perfectly acceptable but it just gives you some perspective at how tight things are. The factory wheels don't clear by much either, I think it's about 1/2".

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