Widened Weld RTS S71's - 15x11

11Sec_Lx

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I tried another experiment with Weld wheels (there have been a handful up to now) and got them on the car today.

This time it was an attempt at improving the fit with the standard Weld RTS, 15x10 wheel for S197's. I chose S71's with a black star. P/n: 71MB-510A75A.

The typical S197 with 15x10 Weld wheels and Mickey Thompson Radial Pros or Mickey Thompson Pro Bracket Radials doesn't look all that great. The tire bulges over the wheel and the tires stick out past the wheel lip.

I wanted the tire tucked in or flush with the wheel lip at a minimum. I also wanted less of a sidewall bulge from a wheel not wide enough for the tire. This called for a compromise on the tire.

I typically run an MT Pro Bracket Radial (3355R). These are .8" more wide than an MT Radial Pro (3754X) and more forgiving on less than ideal surfaces (for me, they work better on the street and definitely get me down the track more often than anything else I've ever tried). For this project, I switched the narrower Radial Pro.

I also noticed that with the same wheel and spec, one with a beadlock and one without, the beadlock wheel will stick out noticeably farther. For this reason, I started with a non beadlock wheel this time.

The last thing I did was have the wheels windened by Weldcraft Wheels. I had them add 1" to add to the backspace, making them 15x11, thinking this may give the Radial Pro a more vertical sidewall for a better appearance and hopefully help it tuck in under the fender lip.

I called MT to verify how wide of a wheel I could have that tire mounted on, without a beadlock. 11" was the answer.

Once I got the wheels back from Weldcraft, I took them to a local powdercoater. He coated the front lip and barrel, gloss black to match the black star on the face, while leaving the sides and chamfered edges of the star with the machined look. He also mounted and balanced them, as well as applied Permatex HI Tack to the sidewalls to keep the wheel from spinning inside the tire.

I called Weld and got some of the hologram, Weld decals to add to the wheels after the powdercoat.

Upon a test fit, I found contact in the following places with the axle completely unloaded (hanging), the bump stop bracket and shock. The emergency brake lines touch the wheel as well. My friend, Bob VanRooy cut the bump stop brackets out and supplied some relocation plates for the bump stops (see pic). I bought some 175lb rated zip ties and used three per side (overkill, I know) to pull the emergency brake line away from the wheel.

I'm pleased with the outcome. They look nice, fit nice and are a little different from the typical Weld wheel you see around
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biminiLX

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Nasty John, nasty.
I’m ready to go from a street roll when you are :)
Need that stick poke emoji.
-J
 

11Sec_Lx

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Nasty John, nasty.
I’m ready to go from a street roll when you are :)
Need that stick poke emoji.
-J
Come on down. Win or lose, both cars are bad to the bone. You get a ride in my car and I call a ride in yours after we race.

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Riddick

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Well, that looks killer pal! Did you measure your contact patch to see if you are getting more rubber on the pavement now? You really need to get out and make some hits :). I want to see how she hooks with your new suspension set up.

I had the same issues on my old street set-up. They were 20x11s out back, with the car on the lift (suspension unloaded) you couldn't turn the tire but it was fine sitting on the ground.
 

slow306stang

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Nice write up and the car looks great with that setup. It looks so good that I may just copy what you did. Imitation is the sincerest form of flattery LOL
 

11Sec_Lx

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Well, that looks killer pal! Did you measure your contact patch to see if you are getting more rubber on the pavement now? You really need to get out and make some hits :). I want to see how she hooks with your new suspension set up.

I had the same issues on my old street set-up. They were 20x11s out back, with the car on the lift (suspension unloaded) you couldn't turn the tire but it was fine sitting on the ground.
I haven't had a tire on these wheels before now. They were bought new, then I sent them out for all of the work. The 275 radial racers put these things on wide, beadlock wheels to spread the contact patch. So it definitely helped, I just don't know how much.

Thanks for the kind words.

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11Sec_Lx

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Funny story for you guys. I had the car out on these last Friday night. I went out with 19lbs cold in them, so a little over inflated for traction, but close. I drove around a little while, then, on some concrete, I got pretty aggressive in second gear and up in smoke they went. As they did, they made the most horrific sound, unlike any tire I've ever spun, they sounded like a woman screaming! It was crazy. I actually looked around, even though I knew better. Ha ha. I tried it again later and the same thing. I don't recall them making this sound when I had this exact tire in the past.

I will say, I was able to roll into them in second and lay down some impressive power. I've got it down with the 555R11's, to the point that they are surprisingly good, and the Pros are noticeably better, as they should be.

I look forward to seeing what they'll do once the roads are warmed up nicely.

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68gtscode

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I don’t know how I missed this thread originally, but I happened across it a few weeks ago. Anyhow, I just saw that John listed these rears for sale on Facebook, in case anyone is interested. They look great!
 

11Sec_Lx

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I don’t know how I missed this thread originally, but I happened across it a few weeks ago. Anyhow, I just saw that John listed these rears for sale on Facebook, in case anyone is interested. They look great!
Thanks!

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GNBRETT

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I just ordered a set of them 555R2's for my Trackhawk. How are they in the rain or have u not been caught in the rain yet with them? I hear they are pretty good but I like to hear from a guy with a 1000+ hp.

They seem to work well on two wheel drive cars so im thinking they should do fine with AWD but I do see a LOT of Trackhawk owners going with 17 inch rears with MT's so im not sure what to think.

I will be at a 1000 hp with my Trackhawk so im hoping these work well considering they were $1600 ****ing dollars smh

I will say, I was able to roll into them in second and lay down some impressive power. I've got it down with the 555R11's, to the point that they are surprisingly good, and the Pros are noticeably better, as they should be.

I look forward to seeing what they'll do once the roads are warmed up nicely.

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