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-   -   New A052 Lotus Friendly Sizes Being Released Feb/March (https://www.lotustalk.com/forums/f91/new-a052-lotus-friendly-sizes-being-released-feb-march-466020/)

Ls1Rx7 01-31-2019 12:18 PM

New A052 Lotus Friendly Sizes Being Released Feb/March
 
The A052 looks like it's the new 200TW street tire king.
Being both faster and lasting longer than the Re71Rs from the first reviews I''ve been seeing.

Some back to back comparisons, and general reviews:

In Feb/March Yokohama will be releasing new sizes that are a bit more lotus friendly. See below for the full list of sizes and specs:
[IMG]https://i.imgur.com/6iSll1Z.jpg[/IMG]

Ls1Rx7 01-31-2019 12:44 PM

@kfennell what do you think the chances are of fitting the 225/50/15's on the front with the Advanti Storm 15x8s and the 255/40/17s out back with the 17x9?
It'll be tight likely but I'm still trying to figure out how to get these in a 225 up front

Section width on these is on the wider side, see above for the chart

kfennell 01-31-2019 01:03 PM

I ran the Trofeo R once in the exact same size and IIRC they were fine in the front, but it looks like I was running the car around stock ride height at the time.

Ls1Rx7 01-31-2019 01:36 PM

Quote:

Originally Posted by kfennell (Post 5921358)
I ran the Trofeo R once in the exact same size and IIRC they were fine in the front, but it looks like I was running the car around stock ride height at the time.

I'm at stock height, and Trofeo Rs also run wide, so thats very encouraging.
How would you say those compare to the Re71Rs btw?

kfennell 01-31-2019 02:22 PM

Quote:

Originally Posted by Ls1Rx7 (Post 5921370)
I'm at stock height, and Trofeo Rs also run wide, so thats very encouraging.
How would you say those compare to the Re71Rs btw?

I wasnt good enough to say for sure, but I think they are likely faster. However cost/lap is on par with hoosiers so they dont make any sense for most people.

LionZoo 02-04-2019 08:12 AM

225/50-15s are too tall for the front. Even certain 205/50-15s (like the Trofeo R) will occasionally rub the fender liners and the 225/50-15s are an inch taller. I have both sizes.

I'm kind of shocked that Yokohama is releasing a 225/50-15, but not a 205/50-15. That seems backwards as the market for 205/50-15 is easily 10X that of 225/50-15.

lotuscupcar 02-04-2019 08:48 AM

Quote:

Originally Posted by LionZoo (Post 5922182)
225/50-15s are too tall for the front. Even certain 205/50-15s (like the Trofeo R) will occasionally rub the fender liners and the 225/50-15s are an inch taller. I have both sizes.

I'm kind of shocked that Yokohama is releasing a 225/50-15, but not a 205/50-15. That seems backwards as the market for 205/50-15 is easily 10X that of 225/50-15.

Can't wait for this for my 94 MR2 turbo ;)

Tirerack is not showing the 15s. Any idea when they are being released?

TedR 02-04-2019 08:48 AM

Quote:

Originally Posted by LionZoo (Post 5922182)
I'm kind of shocked that Yokohama is releasing a 225/50-15, but not a 205/50-15. That seems backwards as the market for 205/50-15 is easily 10X that of 225/50-15.

I was also surprised by the 225/50-15. Competing 200TW tires are available in 225/45-15 or 205/50-15. I wonder who that size is being marketed to?

Ls1Rx7 02-05-2019 06:43 PM

Quote:

Originally Posted by LionZoo (Post 5922182)
225/50-15s are too tall for the front. Even certain 205/50-15s (like the Trofeo R) will occasionally rub the fender liners and the 225/50-15s are an inch taller. I have both sizes.

I'm kind of shocked that Yokohama is releasing a 225/50-15, but not a 205/50-15. That seems backwards as the market for 205/50-15 is easily 10X that of 225/50-15.

So you sy they rub, kfennel ran trofeo Rs in 225 and they didn't rub... I'm curious as to why opinions on this differ so much on this board.
I reached out to Fred at BWR and he said they may rub at full lock, but just don't use full lock, which is a fine stragegy by me as this would be a second set of wheels/tires

Quote:

Originally Posted by lotuscupcar (Post 5922194)
Can't wait for this for my 94 MR2 turbo ;)

Tirerack is not showing the 15s. Any idea when they are being released?

Feb/March for the UK, but funny enough when I called Yokohama USA they said the sizes were in "pre-prodution" stage but that he couldn't tell me when they'd be released. So the US is getting additional sizes too

Quote:

Originally Posted by TedR (Post 5922196)
I was also surprised by the 225/50-15. Competing 200TW tires are available in 225/45-15 or 205/50-15. I wonder who that size is being marketed to?


The chart got cut off, they're also releasing a 205/50/15. Again I'm still trying to get a 225 up front. There doesn't seem to be any benefit going to a 15" wheel if I can only fit a 205 up front.

kfennell 02-05-2019 07:19 PM

FYI mine almost for sure would have hit the light inner liner. If you arent ok with a tire hitting there then you probably better track a different car.

Ls1Rx7 02-05-2019 08:31 PM

Quote:

Originally Posted by kfennell (Post 5922504)
FYI mine almost for sure would have hit the light inner liner. If you arent ok with a tire hitting there then you probably better track a different car.

I was going to remove the liners all together and apply bed liner to the bottom of the clams above the wheels, but Fred had suggested against it.

kfennell 02-06-2019 04:26 AM

Quote:

Originally Posted by Ls1Rx7 (Post 5922514)
I was going to remove the liners all together and apply bed liner to the bottom of the clams above the wheels, but Fred had suggested against it.

I woudlnt do that either youll still crack the clam I bet.

When you get a hole in the front liner cut out a slightly larger area and rivit some thing aluminum sheet from lowes in place on the back of the liner. It will last forever like that.

LionZoo 02-06-2019 04:57 PM

I seem to be the lone voice in the Lotus community screaming about the benefits of having a lot of wheel width. I run a 205/50-15 on a 15x8 front and a 225/50-15 on a 15x8.5 rear (I can't reasonably fit a 15x9 in the rear without hacking the fenders). By Lotus community standards, I run a lot of wheel width and comparatively little tire width. So why do I do it? In repeated tests by Andy Hollis (and others in the Miata racing community), it seems that matching the proper tire width to the wheel width produces the fastest times, instead of just trying to stuff as much tire as possible for a given wheel width. I've had discussions with Emilio (949 Racing) about this and he's stated that he doesn't really see a time improvement going from, for example, a 225 to a 245 on a 9" wheel. The optimal ratios seem to be 8" for 205, 9" for 225, and 10" for 245. Of course, everyone in the Lotus community tends to want 8" for 225 and 9" for 245 so I'm kind of the odd one.

kfennell 02-06-2019 05:05 PM

Quote:

Originally Posted by LionZoo (Post 5922686)
I seem to be the lone voice in the Lotus community screaming about the benefits of having a lot of wheel width. I run a 205/50-15 on a 15x8 front and a 225/50-15 on a 15x8.5 rear (I can't reasonably fit a 15x9 in the rear without hacking the fenders). By Lotus community standards, I run a lot of wheel width and comparatively little tire width. So why do I do it? In repeated tests by Andy Hollis (and others in the Miata racing community), it seems that matching the proper tire width to the wheel width produces the fastest times, instead of just trying to stuff as much tire as possible for a given wheel width. I've had discussions with Emilio (949 Racing) about this and he's stated that he doesn't really see a time improvement going from, for example, a 225 to a 245 on a 9" wheel. The optimal ratios seem to be 8" for 205, 9" for 225, and 10" for 245. Of course, everyone in the Lotus community tends to want 8" for 225 and 9" for 245 so I'm kind of the odd one.

There are 2 more factors at play here.

1. We have more WHP so the drag of more tire is less of an issue
2. With some 225 and 245 the slight pinch you get will give you more clearance.

However its certainly at least possible that it could be faster to run the smaller tire on the bigger wheel. It will certainly be easier to drive.

LionZoo 02-06-2019 06:44 PM

At this point, I have 15x7.5 and 15x8 front wheels and 15x8.5, 16x8, and 16x9 rear wheels sitting around in my garage. I should just put them all with the same model tires and go tire testing. GoFundMe? (And 15x7s can be had for cheap cheap cheap.)

LionZoo 02-06-2019 06:59 PM

Quote:

Originally Posted by kfennell (Post 5922690)
There are 2 more factors at play here.

1. We have more WHP so the drag of more tire is less of an issue
2. With some 225 and 245 the slight pinch you get will give you more clearance.

However its certainly at least possible that it could be faster to run the smaller tire on the bigger wheel. It will certainly be easier to drive.

1) The tests included telemetry that specifically showed that cornering speeds (as opposed to straight line speeds) were what benefited from the fitment.
2) 949Racing's cars are so chopped up I doubt clearance was an issue. They could just bolt on bigger fender flares.

Regardless, part of the reason this is such an uphill battle to fight is that it's really hard to convince car people that more isn't necessarily better. 225s on 8" are not visibly pinched and so look fine. Why WOULDN'T you want more?

Ls1Rx7 02-08-2019 05:23 AM

Quote:

Originally Posted by kfennell (Post 5922554)
Quote:

Originally Posted by Ls1Rx7 (Post 5922514)
I was going to remove the liners all together and apply bed liner to the bottom of the clams above the wheels, but Fred had suggested against it.

I woudlnt do that either youll still crack the clam I bet.

When you get a hole in the front liner cut out a slightly larger area and rivit some thing aluminum sheet from lowes in place on the back of the liner. It will last forever like that.

Why do you say the clam would crack. I'm also painting the car and likely xpel ing most of the high impact address so I would like to save from more bodywork

kfennell 02-08-2019 05:31 AM

Quote:

Originally Posted by Ls1Rx7 (Post 5923016)
Why do you say the clam would crack. I'm also painting the car and likely xpel ing most of the high impact address so I would like to save from more bodywork

Rocks getting picked up by the tires getting thrown straight up from the back of the tire. Mine started cracking after less then 100 miles of street driving with no liner.

Ls1Rx7 02-08-2019 08:17 AM

Quote:

Originally Posted by kfennell (Post 5923018)
Quote:

Originally Posted by Ls1Rx7 (Post 5923016)
Why do you say the clam would crack. I'm also painting the car and likely xpel ing most of the high impact address so I would like to save from more bodywork

Rocks getting picked up by the tires getting thrown straight up from the back of the tire. Mine started cracking after less then 100 miles of street driving with no liner.

Re 71rs must be a lot stickier then r888rs because I've driven the car already over 3000 mi without fender liners and no I'll effects yet

ScottH83 02-09-2019 06:49 AM

Quote:

Originally Posted by LionZoo (Post 5922700)
At this point, I have 15x7.5 and 15x8 front wheels and 15x8.5, 16x8, and 16x9 rear wheels sitting around in my garage. I should just put them all with the same model tires and go tire testing. GoFundMe? (And 15x7s can be had for cheap cheap cheap.)

Just out of curiosity, what type/offset 16x9 wheels do you have?

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