# Different TSS and IF between Garmin and TR

**URL:** <https://www.trainerroad.com/forum/t/different-tss-and-if-between-garmin-and-tr/26255>\
**Category:** Equipment\
**Created:** [December 21, 2019, 11:53am UTC](https://www.trainerroad.com/forum/t/different-tss-and-if-between-garmin-and-tr/26255 "2019-12-21T11:53:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![NIKO](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/niko/32/12703_2.png) [@NIKO](https://www.trainerroad.com/forum/u/NIKO)\
**Post date:** [December 21, 2019, 11:53am UTC](https://www.trainerroad.com/forum/t/different-tss-and-if-between-garmin-and-tr/26255/1 "2019-12-21T11:53:26Z")

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What I’m missing here? The ftp is set the same but IF and TSS are different.

 ![Screenshot_20191221-135106](https://global.discourse-cdn.com/trainerroad/original/3X/3/c/3c11a85eac81997289daf2c8527b2856ea372b44.jpeg) ![Screenshot_20191221-135054](https://global.discourse-cdn.com/trainerroad/original/3X/e/3/e34692efbb14086cf2eea508cccdf8558e2c60ee.jpeg)

[GARMIN](https://connect.garmin.com/modern/activity/4354576889?share_unique_id=84)

[TR](https://www.trainerroad.com/career/nikop/rides/68782457-kaweah)

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**Author:** ![schmidt](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/schmidt/32/16318_2.png) [@schmidt](https://www.trainerroad.com/forum/u/schmidt)\
**Post date:** [December 21, 2019, 12:43pm UTC](https://www.trainerroad.com/forum/t/different-tss-and-if-between-garmin-and-tr/26255/2 "2019-12-21T12:43:26Z")

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Hm Garmin is fucking up, but why? 🤦‍♂️

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**Author:** ![brendanhousler](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/brendanhousler/32/11363_2.png) [@brendanhousler](https://www.trainerroad.com/forum/u/brendanhousler)\
**Post date:** [December 21, 2019, 2:08pm UTC](https://www.trainerroad.com/forum/t/different-tss-and-if-between-garmin-and-tr/26255/3 "2019-12-21T14:08:40Z")

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max power is different so I’d guess there are other variances in the file…

[Brendan](http://www.evoq.bike/blog)

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**Author:** ![NIKO](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/niko/32/12703_2.png) [@NIKO](https://www.trainerroad.com/forum/u/NIKO)\
**Post date:** [March 3, 2020, 12:14pm UTC](https://www.trainerroad.com/forum/t/different-tss-and-if-between-garmin-and-tr/26255/4 "2020-03-03T12:14:12Z")

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Ok, so I noticed this again today. It has been the same almost all the rides.

> **[Get Faster with TrainerRoad](https://www.trainerroad.com/app/career/nikop/rides/74436326-bashful-2)**
>
> Cycling's most effective training system. Structured indoor and outdoor workouts, proven training plans, and easy-to-use ride analysis tools.

> **[Indoor Cycling](https://connect.garmin.com/modern/activity/4613600288)**
>
> Distance 30.08 km | Time 1:00:02 | Speed 30.1 kph | Elevation 0 m

Downloaded the files from TR and from Garmin and added them to DCrainmakers analyzer.  
[https://analyze.dcrainmaker.com/#/public/0618bd81-8d17-4c03-7b24-938d58195576](https://analyze.dcrainmaker.com/#/public/0618bd81-8d17-4c03-7b24-938d58195576)  
And the files seem to be close together.  
So any ideas why other gives IF 0.94 and 0.957  
TSS is also bit different.