215/45/16 Up Front - LotusTalk - The Lotus Cars Community
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post #1 of 13 (permalink) Old 01-11-2019, 10:13 PM Thread Starter
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215/45/16 Up Front

Only a 23.6" tall tire. Still shorter than factory. Tire rack shows the section width as being 8.4" on the Rival S 1.5s vs 8" for stock 195 A048s
Anyone running these?

I'm looking at XXR wheels which are 16x8, and I dislike the stretched look, plus trying to put as much tire up front as I can get without going to a 15" wheel setup
Rear would be 245/40/17, which I think is also right around stock height.
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post #2 of 13 (permalink) Old 01-14-2019, 06:49 PM Thread Starter
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ok so I'm going to try this out and let everyone know.
My thought is that this might be a good middle ground for those that don't like the look of 15's but still want more front end grip.

They also make the XXR527s in 15s in +25 so there's no reason I couldn't get a set of matching 15" up front for under $200 if I need more grip up front.
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post #3 of 13 (permalink) Old 01-14-2019, 07:58 PM
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I have xxr527 16x8 and 17x8.25
Tires are R888R in 205/45/17 and 235/40/17

The xxr527 has pretty aggressive offset (+20mm), and NEEDS a 6mm spacer to clear the front calipers. Puts you at +14 offset. You WILL NEED V2 arms and -2* camber.

Now put a wider 215 tire, and you should be fine, but i highly doubt it offers much more grip, and i doubt you actually need it. Just adds weight, money, and potentially rubbing.

You also cant go too low with this setup. At least I didnt. I would hate to see what happens if the front clam eats up the wheels during a deep compression.
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post #4 of 13 (permalink) Old 01-15-2019, 03:42 AM Thread Starter
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Originally Posted by Beemerb0y View Post
I have xxr527 16x8 and 17x8.25
Tires are R888R in 205/45/17 and 235/40/17

The xxr527 has pretty aggressive offset (+20mm), and NEEDS a 6mm spacer to clear the front calipers. Puts you at +14 offset. You WILL NEED V2 arms and -2* camber.

Now put a wider 215 tire, and you should be fine, but i highly doubt it offers much more grip, and i doubt you actually need it. Just adds weight, money, and potentially rubbing.

You also cant go too low with this setup. At least I didnt. I would hate to see what happens if the front clam eats up the wheels during a deep compression.

I have the V2 arms and the negative camber is maxed out, and I still don't have enough front end grip. If the wider front tires don't help I'll machine the arms to go to -3 degrees.
With that offset and tire will I be closer to rubbing on the inside or the outside?

I can tear apart an engine and trans, but I still for the life of me can't get offsets corrcect, came from american cars where they talked about backspace in inches.
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post #5 of 13 (permalink) Old 05-07-2019, 09:09 AM
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Revisiting this topic. 215/45 R16 on a bone stock Elise with LSS wheels... Think there will be rubbing concerns?

It's hard to say because I have had 205/50's which were ~0.6" taller but the section width was ~0.5" narrower (based on a 6.5" rim, not 7", so the tire could have been wider), and the tread was ~1" narrower than the stock 195/50 Yokohama's (man those have a wide contact patch!).

The 215/45 is now 0.7" wider section width (still 0.2" less tread width) on the same diameter, which seems like a lot to ask of a little car. But is width that close of a tolerance? Or is height the bigger concern? Unfortunately I dismounted my old tires already so I can't take measurements

Thanks,

Keith

p.s. Please do not try to sell me on a particular tire. I am just looking for information on fitment if anyone has any experience with this size.
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post #6 of 13 (permalink) Old 05-07-2019, 11:40 AM
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Originally Posted by 05 Elise Freak View Post
Revisiting this topic. 215/45 R16 on a bone stock Elise with LSS wheels... Think there will be rubbing concerns?
.
Good luck getting them to heat up properly. This is the trouble, we think going with wider rubber is the solution for more front end grip. The problem is that a wider tire won't get hot enough to operate within the proper temp range that it needs. You end up with a wide tire that is cold with no grip. I've posted more info on my blog: Tire Selection

Of course, if you are taking tire temps and able to get within the optimal range, ignore my comments.

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post #7 of 13 (permalink) Old 05-07-2019, 02:00 PM Thread Starter
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I don't think it'll be a problem especially with these cheater slick type tires.

You guys are making too big of an issue off this when other reputable lotus vendors are autox ing with wider front r compounds which are harder to bring up to Temp.

Last edited by Ls1Rx7; 05-07-2019 at 02:07 PM.
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post #8 of 13 (permalink) Old 05-20-2019, 08:45 AM
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My question was "will it fit." It was not "will it come up to temperature." I don't live in California, I don't even know what "canyon runs" are and, I don't normally race my car. I use my car less than 1500 miles per year on the few sunny days we have between June and September. I'm looking for a size that doesn't upset my ABS which I believe was a problem with my previous choice since the fronts were so tall. If anyone on here has ever put a 215/45-16 on a stock Elise, that would be helpful. If I don't hear from anyone, I'm going to order them this week and hopefully have them installed in the next few weeks. I hope they will fit!

Keith
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post #9 of 13 (permalink) Old 05-20-2019, 10:07 AM
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I run 225/45-16 fronts and 255/40-17 rears without any problem.
I don't understand the front grip issues, if you setup your camber and toe-in properly
you should be able to balance the car quite easily. I have a neutral to rear bias on my
car without the need for extravagent modifications. I track regularly so it's been well tested.
Kubera likes this.

Stay Tuned.....
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post #10 of 13 (permalink) Old 05-20-2019, 12:02 PM
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Originally Posted by Ls1Rx7 View Post
You guys are making too big of an issue off this when other reputable lotus vendors are autox ing with wider front r compounds which are harder to bring up to Temp.
They always do. The racer-group around here think they know everything about everything (especially tires ). Tires are inexpensive in the long run, so try what you want, it's no big deal if you don't live your life a 10th of a second at a time.

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post #11 of 13 (permalink) Old 05-20-2019, 12:09 PM
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Thank you for your help. I suspected it would be okay since the OEM tire is so wide at the tread, but it is nice to hear it from someone who has tried it!

Keith
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post #12 of 13 (permalink) Old 05-20-2019, 12:09 PM Thread Starter
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Originally Posted by evansp60 View Post
I run 225/45-16 fronts and 255/40-17 rears without any problem.
I don't understand the front grip issues, if you setup your camber and toe-in properly
you should be able to balance the car quite easily. I have a neutral to rear bias on my
car without the need for extravagent modifications. I track regularly so it's been well tested.
What tires do you run? only a few options in 225/45/16.
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post #13 of 13 (permalink) Old 05-21-2019, 06:28 PM
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Originally Posted by Ls1Rx7 View Post
What tires do you run? only a few options in 225/45/16.
Toyo R1R for the street, Direzza ZIII for street, Yokohama A048 for the track - tirerack.com

Stay Tuned.....

Last edited by evansp60; 05-21-2019 at 06:39 PM.
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